The average speed of the rocket from 3 to 4 seconds after launch is: -40 ft/s
Given the equation as a model, h(t) =–16t² + 72t.
Average speed from 3 to 4 seconds =
<em>Find h(4):</em>
h(t) =–16t² + 72t
- Substitute 4 for t in the equation h(t) =–16t² + 72t
h(4) = -16(4)² + 72(4)
h(4) = -256 + 288
h(4) = 32
<em>Find h(3):</em>
h(t) = -16t² + 72t
- Substitute 3 for t in the equation h(t) =–16t² + 72t
h(3) = -16(3)² + 72(3)
h(3) = -144 + 216
h(3) = 72
Plug in the value into :
average speed from 3 to 4 secs =
Therefore, the average speed of the rocket from 3 to 4 seconds after launch is: -40 ft/s
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brainly.com/question/11627203
3a + 3b
combine like terms: a+a+a=3a
b+b+b=3b
3a +3b
Use distributive
3f - 15 - 9 = -3
Combine like terms
3f - 24 = -3
Add 24
3f = 21
Divide by 3
f = 7