You ride your bike to school. as you approach an intersection, you decrease your speed by 1.5 miles per hour per second. select an inequality that represents the time tt (in seconds) until your speed decreases by more than 10.5 miles per hour. then solve the inequality.

The time elapsed is greater than 7 seconds

Step-by-step explanation:

From definition

acceleration = change in speed/time elapsed

or:

a = Δv/t

Rearranging:

a*t = Δv

If your speed decreases by more than 10.5 miles per hour, then:

Δv > 10.5

Replacing with the previous equation and solving for t:

a*t > 10.5

t > 10.5/1.5

t > 7 s