Answer:
B.
2h
Step-by-step explanation:
If you are going 45 miles per hour, you will travel 45 miles in 1 hour. It will take you 2 hours to travel 90 miles at a speed of 45 miles per hour.
to make it easier multiply 45 by 2 = 90
45 x 2 = 90
B
45+45=90
45 per hour
so, 2 hours
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