An investor has an account with stock from two different companies. Last year, her stock in Company A was worth $2150 and her stock in Company B was worth $4000. The stock in Company A has decreased 2% since last year and the stock in Company B has decreased 25%. What was the total percentage decrease in the investor's stock account? Round your answer to the nearest tenth (if necessary).

46

step-by-step explanation:

given

height = 168 cm

formula

height =2.47*f+54.13

solution

168 = 2.47f + 54.13             subtract 54.13 from both sides

168 - 54.13   = 2.47f             combine

113.87 = 2.47f                     divide by 2.47

113.87 / 2.47 = f                   combine

46.1 = f  

answer: 46 cm

the solution, from the graphing of the two lines, is (3,2), i.e., x = 3, y = 2.