Advertising costs for the save more store increases by about 32,000 per year, 352,000 was spent on advenrtising in 1992, write an equation that gives the amount spent as a function of the number of years since 1980.

Question

Advertising costs for the save more store increases by about 32,000 per year, 352,000 was spent on advenrtising in 1992, write an equation that gives the amount spent as a function of the number of years since 1980.

So, you get.
Y=32000x

But, I don't know exactly where to go from there, could someone help me please?

Thank you.

Answer 1

straight line, y = m x + b

y = year - 1980
in 1992 y = 12

C = 32,000 y + b

352,000 = 32,000 * 12 + b
b = (352-32*12)1000 = -32,000
so
c = 32,000 y - 32,000
or
c = 32,000 (year-1980) -32,000