Don works in home construction. he determined that the function t(a)=144a/9.252 gives the total number of 9 in. tiles needed to cover an area of a square feet, when spacing the tiles a quarter inch apart. find t(400) and explain what it means.

6,226 tiles of 9 in are needed to cover an area of 400 square feet

Step-by-step explanation:

Let

A -----> an area in square feet

t(A) ---> the total number of 9 in. tiles needed

we have

For A=400 ft^2

substitute in the equation and solve for t

That means -----> 6,226 tiles of 9 in are needed to cover an area of 400 square feet

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value