7 hours X 60 minutes = 420 minutes
420 minutes + 20 minutes = 440 minutes
Bob gets 16 problems correct. Hope this helped.
A parent function is normally not streched or anything or shhifted
y=kx or
y=x^a or
y=a^x are exapmles
y=x is y=1x
y=2x^3 is not it because the parent would be y=x^3
y=1/x is y=x^-1
y=2^x is y=2^x
answer is 2x^3 is not a parent function
