30 percent off means that we can just reduce 30 percent from .79 to get .55.
divide 10.00 by .55 to get the answer of <span>18.18. The max yogurts Nicola can buy is 18.</span>
Let x be the time in hours it takes to go 80 miles. Set v(t) = 80.
∫v(t)dt = 80 from 0 to x
Then 80x - 80(0) = 80
80x = 80
x = 1 hour
Do you have a picture we can see?
