Let x=−1. Evaluate the function for y. y=7.2x+3
Enter your answers in the boxes.

y = 7.2 ⋅(___) + 3

y = __ + 3

y =

Question 1:

Assume that the number is x

Two times a number is 2x and 9 more means that we will add 9

This gives us : 2x + 9 > option B

Question 2:

We are given the expression: 3m-5. To find the value of the expression at m = 7, all we have to do is substitute in the expression with the given value.

This gives us: 3(7) - 5 = 21 - 5 = 16 > option B

Question 3:

The given expression is 4x+8y-3x+2y. To simplify the expression, we will group the like terms (terms having the same variable raised to the same degree)

This gives us: x(4-3) + y(8+2) = x + 10y > option D

Question 4:

The given expression is: 24p + 64. To factor the expression, we will need to take out the common factor from both numbers and then use distributive property. We can note that both numbers are divisible by 8.

This gives us: 8() = 8(3p+8) > option C

Question 6:

We are given that W-8=-12. To isolate the W we will simply add 8 to both sides.

This gives us: W-8+8 = -12+8 > W = -4 > option B

Question 7:

We are given that 3q=12. To isolate q, we will simply divide both sides by 3.

This gives us: > q=4 > option A

Question 8:

We are given that . To get the value of q, we will simply multiply both sides by 6.

This gives us: > q=144 > option D

Question 9:

We are given that: 3b-9=15. To get the value of b, we will first add 9 to both sides of the equation and then divide both sides by 3.

This gives us: 3b-9+9=15+9 > 3b=24 > b= > option A

Question 10:

The given is: . To get the value of y, we will first subtract 10 from both sides and then multiply both sides by 5.

This gives us: > y = -25*5 = -125 > option A

Question 11:

The given is: -3(4-a=6). To get the value of a, we will first divide both sides by -3, then subtract 4 from both sides and finally multiply both sides by -1

This gives us: 4-a = > -a=-2-4=-6 > a=6 > option D

Question 12:

The given is: 5(x+6)=45. To get the value of x, first we will divide both sides of the equation by 5 and then subtract 6 from both sides.

This gives us: x+6 = > x = 9-6 = 3 > option B

Question 13:

Assume that the number of bottles is x.

He has 4 full bags of bottles. This means that number of bottles in bags = 4x

He has additional 8 bottles.

The total number of bottles is 104

This means that total number of bottles is 4x+8 = 104

Now, we solve the equation:

4x+8-8 = 104-8 > 4x=96 > x= > option C

Question 14:

Note that on the negative axis, the number decreases as its value increases (this is opposite to the positive counting). In other words: -1 > -2 and -2>-3 and so on.

This means that for h>-6 > h could be -4 > option D

Question 15 & 16:

The given is: Z-4>9. To get the value of Z, Add 4 to both sides of the equation.

This gives us: Z-4+4 > 9+4 > Z>13 > option D

Question 17:

The given is: Q+7 < -15. To get the value of Q, subtract 7 from both sides.

This gives us: Q+7-7 < -15-7 > Q < -22

Question 18:

The given is: -3y>9. To get the value of y, we will divide both sides by -3. Remember that when we divide by a negative number, we flip the inequality sign. This means that the > will be flipped to <

This gives us: > option C

Question 19:

The given is: -4. " class="latex-formula" id="TexFormula12" src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bk%7D%7B5%7D%20%3E%20-4.%20" title=" \frac{k}{5} > -4. "> To get the value of k, we will multiply both sides of the equation by 5.

This gives us: k > -4(5) > k > -20 > option A

Question 20:

The given is: 4g-8<20. To get the value of g, we will first add 8 to both sides of the equation and then divide both sides by 4.

This gives us: 4g<28 > g< > g<7 > option D

Question 21:

The given is: . To get the value of v, first we will subtract 12 from both sides of the equation, then we will multiply both sides by -2 (remember to flip the inequality sign since we are multiplying by a negative number)

This gives us: > option A

Hope this helps :)