307 IN EXPANDED FORM
1 answer:
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average rate of change is the slope (of the line) between the two coordinates
f(t) = -16t² + 48t + 100
f(3) = -16(3)² + 48(3) + 100 = -144 + 144 + 100 = 100 (3, 100)
f(5) = -16(5)² + 48(5) + 100 = -400 + 240 + 100 = -60 (5, -60)
m = =
=
= -80
Answer: -80 ft/sec
Number of multiples of 7 up to 1337: 
Number of multiples of 11 up to 1337:
Number of multiples of 77 up to 1337:
This means there are
distinct multiples of 7 *or* 11 up to 1337.
The sum of these multiples is
which can be computed using the well-known formula,
So you have
Number of multiples of 11 up to 1337:
Number of multiples of 77 up to 1337:
This means there are
The sum of these multiples is
which can be computed using the well-known formula,
So you have