MATHEMATICS

Instructions

 Instructions 1. You have ten problems – one on each tab of this Excel file. 2. Please show your work in the cells. Use Excel formulas instead of writing the values/answers directly in the cell. The instructor will then know where you made a mistake and provide you valuable feedback and partial credit (if appropriate). 3. The grey cells are data values which are given (known values). The yellow cells are unknowns and have to be determined. Total Points: 6

Problem 1

 A scale drawing of an office building is not labeled, but indicates 0.25 inch = 5 feet. On the drawing, one wall measures 2 inches. How long is the actual wall? Inches Feet 0.25 5 2 Refer to the Solved Example 5 on Page 166 of your text.

Problem 2

 Marcus James purchased 2,500 pounds of produce. Records indicate he purchased 800 pounds of potatoes, 150 pounds of broccoli, and 390 pounds of tomatoes. He also purchased apples. How many pounds of apples did he purchase? Total produce pounds Potatoes pounds Broccoli pounds Tomatoes pounds Apples pounds Refer to the Solved Example 1 on Page 163 of your text.

Problem 3

 The formula for the installment price of an item purchased with ﬁnancing is Installment price = Total of installment payments + Down payment. The formula can be written in symbols as I = T + D. Part a Find the installment price I if T = \$24,846.38 and D = \$2,500. = + Part b Find the down payment for an installment loan if the installment price is \$13,846.76 and the total of installment payments is \$10,673.26. = + Part c Find the total installment payments if I = \$6,508.72 and D = \$2,250. = +

Problem 4

 Wallpaper costs \$12.97 per roll and a kitchen requires 9 rolls. What is the cost of the wallpaper needed to paper the kitchen? Cost per roll Total rolls needed Total cost to paper kitchen

Problem 5

 Wilson’s Auto, Inc., has 37 employees and a weekly payroll of \$10,878. If each employee makes the same amount, how much does each make? Total no. of employees Total weekly payroll Earnings per employee

Problem 6

 Jacob Kennedy borrowed \$30,000 to start up his consulting business. The loan had a simple interest rate of 6.2% for 3 years. Use the formula I = PRT to ﬁnd the amount of interest he will pay on the loan. I = interest; P = principal; R = rate (expressed as a decimal 0.062); T = time in years Principal (P) Interest (R) Time (T) years Simple Interest (I)

Problem 7

 A car odometer increased from 37,580.3 to 42,719.6. What was the increase? New Value Original Value Amount of increase Absolute Change

Problem 8

 A number decreased from 486 to 104. Find the amount of decrease. New Value Original Value Amount of change Absolute Change

Problem 9

 A number increased from 224 to 336. Find the percent of increase. New Value Original Value Amount of increase Absolute Change Percentage increase Relative Change

Problem 10

 A number decreased from 250 to 195. Find the rate of decrease. New Value Original Value Amount of change Absolute Change Percentage change Relative Change

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