The formula
d
=
1.3
t
2
+
t
+
2
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.

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?

feet per second

As the time
t
since the car started to move increases from
t
=
8
to
t
=
8.1
seconds, what constant speed must a truck travel to cover the same distance as the car over this 0.1-second interval?

feet per second