Which polynomial function could be represented by the graph below?

Which equation represents a proportional relationship that has a constant of proportionality equal to 1/5

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

The table below shows the approximate height of an object x seconds after the object was dropped. the function h(x)= -16x^2 +100 models the data in the table. for which value of x would this model make it the least sense to use? a. -2.75 b. 0.25 c. 1.75 d. 2.25