At least answer first

1. what linear function can be represented by the set of ordered pairs?

{(−4, 15), (0, 5), (4, −5), (8, −15)}

enter your answer in the box.
f(x)=

2. a business spends $3500 to purchase a copy machine. the business also spends $125 per month on maintenance and supplies for the copy machine.

what function equation represents the total cost of the copy machine after x months?

f(x)=125x+3500

f(x)=3500x+125

f(x)=125x−3500

f(x)=3500x−125

For the first one, first find your slope (), then use f(x)=mx+b. Your slope would be . Your y-intercept is given as (0,5), so your equation of the line would be f(x)=(-5/2)x+5. For the second one, first you find what is constant. As your 3500 is a one time purchase, it is your constant, which will be your y-intercept. Your slope would be whatever changes over time, which is your maintenance cost of 125. This creates the equation f(x)=mx+b => f(x)=125x+3500.

Given:

Given that the radius of the cylinder is 6 m.

The height of the cylinder is 7 m.

We need to determine the surface area of the cylinder.

Surface area of the cylinder:

The surface area of the cylinder can be determined using the formula,

where r is the radius and h is the height of the cylinder.

Substituting r = 6 and h = 7 in the above formula, we get;

Simplifying, we get;

Multiplying, we get;

Thus, the surface area of the cylinder is 489.84 square meters.

Hence, Option a is the correct answer.