Jean drove 70 miles per hour for a total of 420 miles on a trip. She used the equation below to calculate the time, t, it would take her to complete the trip.

What is the constant of proportionality in the equation?
A.
6
B.
420
C.
t
D.
70

D. 70

Step-by-step explanation:

Distance = k × time

70 = k(1)

k = 70

Distance = 70 × time

time to complete the journey:

420 = 70 × time

time = 420 ÷ 70

time = 6 hours

468

step-by-step explanation:

15% chance.

step-by-step explanation:

3/10 times, the 5 year old will get a tablet. 5/10 times, the 13 yer old will get a tablet. multiply both fractions to get 15/100 times, both would have a tablet.