SOLUTION: A marketing firm found that the equation S = 2.1A + 224 describes how the amount of sales S of a product depends on A, the amount spent on advertising the product. Both S and A ar

Question 1124104: A marketing firm found that the equation S = 2.1A + 224 describes how the amount of sales S of a product depends on A, the amount spent on advertising the product. Both S and A are measured in thousands of dollars. For what amount, A, is the sales of a product at least 350 thousand dollars?

Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
the formula is S = 2.1 * A + 224

when S = 350, the formula becomes 350 = 2.1 * A + 224

subtract 224 from both sides of this equation and then divide both sides of this equation by 2.1 to get:

(350 - 224) / 2.1 = A

solve for A to get A = 60.

so, if 60 thousand is spent on advertising, then the amount of sales can be expected to be 350,000.

your formula becomes S = 2.1 * 60 + 224 = 350.

all dollar figures are in thousands of dollars, including, presumably, the 224.

RELATED QUESTIONS
A vacuum cleaner salesperson's weekly income depends on the amount of his sales. His... (answered by ikleyn)

Polynomials Retail companies must keep close track of their operations to maintain... (answered by richard1234)

A marketing firm spent $12,400 in advertisements in January for Alexa's used car... (answered by mathtech5)

1. In this problem, we analyze the profit found for sales of decorative tiles. A demand... (answered by KMST)

A marketing firm estimate that n months after the introduction of a client of new product (answered by CPhill)

A laboratory tested 78 chicken eggs and found that the mean amount of cholesterol was 224 (answered by Theo)

1. In this problem, we analyze the profit found for sales of decorative tiles. A demand... (answered by solver91311)

Please help me! Tomato Soup. The amount of metal S(in square inches) that it takes to... (answered by solver91311)