Question

G(t) is the number of points you can expect to earn on a test after studying for t hours.

Interpret (with units): "G(0) = 50"
What are the units for dG/dt?
Interpret (with units): "dG/dt = 6.4 when t = 7"
Interpret (with units):"G'(12) = 3"
Interpret (with units): "the derivative of G with respect to t is 0 when t = 4"
Interpret (with units): "the slope of the tangent line when t = 15 is approximately –2."

Answer 1

I got
a) If you stud for 0 hours (or not at all) you'll get 50 points on the test.
b) The # of points yo make per hour (points gained/hours studied)
c) Afer 7 hours, you're expected to earn 6.4 more points an hour at the rate you're going
d) After 12 hours, the rate at which you'll be earning points on a test is 3 points/hr
e) At 4 hours of studying, you're epected to gain 0 points an hour
f) After 15 hours of studying, you're expected to lose 2 points an hour after studying

Answer 2

@Hero @ganeshie8 @phi

Answer 3

@kropot72 @thomaster