Question

The function f(t)=2.6t+17.8 can be used to estimate the yearly sales of cotton goods, in billions of dollars, as a function of time, in years, measured from 1975.
a) What is the slope of the graph if this function?
b) Interpret the slops as a rate of change

Answer 1

did you get a) ?

Answer 2

No

Answer 3

slope of a line is the coefficient on the independent variable (which in this case is t)

Answer 4

oh ok

Answer 5

how about b) ?

Answer 6

A isn't t

Answer 7

t is the independent variable.
the slope is the *coefficient* on the independent variable.
What is the coefficient on t?

Answer 8

f? I don't know

Answer 9

2.6
http://en.wikipedia.org/wiki/Coefficient

Answer 10

So whats b?