1. the cost of first-class postage stamp was 5 ¢ in 1965 and 45 ¢ in 2010. this increase represents exponential growth. write the function s for the cost of a stamp t years after 1965 (t = 0).
2) what was the growth rate in the cost?
3) predict the cost of a first-class postage stamp in 2018, 2021, and 2024.

c

-by-step explanation:

it would be c

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33

step-by-step explanation: