Answer:
A. x-6
Step-by-step explanation:
Maybe you want to simplify ...
((6x)/(10x^2))/(6/(10x^3 -60x^2))
Invert and multiply. Cancel common factors from numerator and denominator.

Answer:
yes
Step-by-step explanation:
He rowed 31.5 miles in half of an hour, to get speed per hour, you multiply by two.
31.5*2=63
Doug's average speed is 63 miles per hour~_~
Answer:
Step-by-step explanation:
a. the balloon is rising because the slope is positive. the slope is 40 because when you simplify y-160 = 40 (x-1) it gets you y = 40x +120
b. it is ascending (bc positive) at 40 feet per minute
c. it was at 120 feet in the air. The 120 is the y intercept