Answer:
17 years
Step-by-step explanation:
do 85 divided by 5
Answer:
-3x - 7
Step-by-step explanation:
-3x - 6 - 1 = -3x - 7
For this case we have the following equation:

The variables are:
t: time in hours
d (t): distance traveled in miles.
We evaluate the distance traveled after 4 hours.
So we have that for t = 4:
Answer:
d (4) = 68
This means that after 4 hours Joanna cycled for 68 miles total
Perimeter is 2l+2w
Therefore 20=2(6)+2w. Solve for w to get
w=3
Hope this helped ;)