Consider the following.The New You fitness clothing company tracks the amount it spends on advertising each month. It was determined that when the company spends $1,000 per month on advertising, it sells67,560piecesof fitness clothing. When it spends $4,000per month on advertising, it sells86,310piecesof fitness clothing.Letxrepresent the amount the company spends on advertising in a month in thousands of dollars, and letyrepresent the number of pieces of fitness clothing it sells in thousands.Compute the marginal changeb.b= pieces of fitness clothing per dollarUse the marginal change and the fact that when the company spends $1,000 per month on advertising, it sells67,560piecesof fitness clothing to determine they-interceptin the equation

y=a+bx.

(x,y) =

Write the equation in the form

y=a+bx

for the number of pieces of fitness clothing sold (in thousands) whenxthousanddollars is spent on advertising.