Which of the following situations is best represented by the equation y = 15x ?

Given f(x) = 17-x^2what is the average rate of change in f(x) over the interval [1, 5]?

The first floor of marcus’ house is 1,440 square feet. he will cover 1,033 square feet with wood and the rest with tile. a box of tiles will cover 11 square feet. how many boxes of tile does marcus need to buy to cover the floor?

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4