Answer:
50 ft2
Step-by-step explanation:
im not sure if this is right but this is what i got when i worked it out
The answer is d=<span>= 1/2 (a+b) 2nd power </span>
Y varies directly as x: y=kx, k is a constant.
when x=7, y=21, so we know k=3
therefore, the equation is y=3x
The domain, or the distance traveled, is all real numbers from 10 to 30, inclusive. the answer is A
