Question

Let d(t) be the total number of miles Joanna has cycled, and let t represent the number of hours after stopping for a break during her ride.

d(t)=12t+20
So, d(4) = [32,96,88,68]. This means that after [cycling 4 miles, 4 hours, a 4 hour break, cycling at a speed at 4 mph], Joanna [took a 96 minute break, cycled for 68 miles total, rode for 32 hours total, cycled 88 miles total]

Answer 1

the bold is the answer for the drop down! hope this helps!

d(4)= 68. this means that after 4 hours, Joanna cycled 68 miles total

Explanation:

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Answer 2

For this case we have the following equation:

`d (t) = 12t + 20`
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:

`d (4) = 12 (4) +20 d (4) = 48 + 20 d (4) = 68`
Answer:
d (4) = 68
This means that after 4 hours Joanna cycled for 68 miles total