Answer:
108
Step-by-step explanation:
2/3x+4=76
2/3x=72
x=72*3/2
x=108
Answer:

t= 03:21 h
Step-by-step explanation:
A constant speed means that it does not change over a period of time and direction of motion. A simple formula, for this case (constant speed)
where x is distance and t time. The subtract is final value minus initial value
If xo=0 miles and to=0 h, then

We have distance, and speed so we need to calculate the time (how long)

t= 03:21 h
reference :https://www.timecalculator.net/time-to-decimal
Yes i believe they are correct
(hope you get a 100% :))