With this question!
at a fruit stand, apples cost 80 cents for x apples and oranges cost 75 cents for y oranges. which of the following represents the cost, in dollars, of 5 apples and 6 oranges?

($4.00/x)+($4.50/y)

Step-by-step explanation:

we know that

Apples cost 80 cents for x apples

so

One apple cost $0.80/x

Oranges cost 75 cents for y oranges

so

One orange cost $0.75/y

Find the cost of 5 apples and 6 oranges

Multiply the number of apples by the cost of one apple and multiply the number of oranges by the cost of one orange

so

5($0.80/x)+6($0.75/y)=($4.00/x)+($4.50/y)

Option C is correct

value of c is, units

Step-by-step explanation:

Using Pythagoras theorem;

     ....[1]

As per the statement:

A right triangle XYZ, with Z being the right angle and

XZ=15, YZ=9, and XY=c.

Using Pythagoras theorem in triangle XYZ :

Hypotenuse side = XY = c unit

Shorter side = YZ = 9 units

Longer side = XZ = 15 units

Substitute these in [1] we have;

⇒

⇒ units

Therefore, the value of c is, units