In 2 seconds, an elevator travels 40 feet. In 3 seconds, the elevator travels 60 feet and in 4 seconds, the elevator travels 80 feet. Write an equation that gives the realtionship between the nummber of seconds x and the distance y the elevator travels.

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.

Acaterpillar eats 1400\%1400% of its birth mass in one day. the caterpillar's birth mass is mm grams. which of the following expressions could represent the amount, in grams, the caterpillar eats in one day? \

Solve 13 + w/7= -18 (w/7 is a fraction)