20( -1.5r + 0.75)
Multiply everything by 20
= -30r + 15
Answer:
c
Step-by-step explanation:
Answer:
12 2/3 km/hour or 12.666 km/hour
Step-by-step explanation:
Because 3 1/6 is the rate for every quarter hour, simply multiply that rate by 4 in order to get the average speed over the course of an hour.
