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The formula

`d=1.1t^(2)+t+1`

expresses a car's distance (in feet) north of an intersection,

`d`

, in terms of the number of seconds

`t`

since the car started to move. a. As the time

`t`

since the car started to move increases from

`t=2`

to

`t=5`

seconds, what constant speed must a truck travel to cover the same distance as the car over this 3-second interval?

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feet per second

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b. As the time

`t`

since the car started to move increases from

`t=7`

to

`t=7.1`

seconds, what constant speed must a truck travel to cover the same distance as the car over this 0.1 -second interval?

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feet per second

`◻`