What type of function does this situation describe? (linear / exponential / quadratic / none)

WHY?

The sale price of a sweater is $48. The price is 20% less than the original price. What was the original price.

A piece of wire is 290 cm long. Dawid cuts three 25 cm lengths off the wire. He then cuts the rest of the wire into as many 30 cm lengths as possible. Work out how many 30 cm lengths of wire Dawid cuts.

10000 is 96.5 percent of what number?

What is the X and Y intercept of 8 (4+x) - 3=12 (x+y) + 5

A jewl case that holds 2 cds is 140mm x 120 mm x 9 mm what is the surface area of this jewl

The demand equation for soccer tournament T-shirts is xy - 5,000 = y where y is the number of T-shirts the Enormous State University soccer team can sell at a price of $x per shirt. Find dy dx x = 6.

What is 1 whole - 2 --- 3

If f (x) = 2-x^1/2 and g (x) + x^2-9, what is the domain of g (x) / f (x) ?

Do you have to subtract the intersection of mutually exclusive events?

Danielle runs 1/5 of a mile in 4.5 minutes. if she continues at the same speed, how long will it take her to run two miles?