Administration Quick TIP In front-end rounding, only one nonzero digit (first digit) remains. All digits to the right are zeros. Solution Actual Texas Offshore (Gulf) Alaska California North Dakota 537,844,000 S 480,785,000 S 208,749,000 S 196,198,000 S 152,910,000 S Estimated Total Front-end Rounded 500,000,000 500,000,000 200,000,000 200,000,000 200,000,000 1,600,000,000 barrels of oil Oil consumption in the U.S. is about 7,000,000,000 barrels. The U.S. must buy the difference

53 Multiply the following decimals. 7. .532 * 3.6 .532 d 3 decimals * 3.6 d 1 decimal 1.9152 d 4 decimals 8. .259 * 6.2 .259 d 3 decimals * 6.2 d 1 decimal 1.6058 d 4 decimals 9. 10. 11. 12. 76.9 * .903 * .0408 .06 * * 21.7 .431 2481.9 .003 CALCULATING GROSS EARNINGS Find the gross pay for each employee at the given rate. Round to the nearest cent. (See Examples 2 and 3.) 13. 18.5 hours at $8.25 per hour 18.5 * $8.25 = $152.63 13. $152.63 14. 36.6 hours at $9.85

orders. 18. , of 752 employees is 470 employees. 19. The basic percent formula is P = B * R. Show how to find the formula to solve for R (rate). (See Objective 1.) 20. A problem includes last year’s sales and this year’s sales and asks for the percent of increase. Explain how you would identify the base, rate, and part in this problem. (See Objective 4.) Solve for rate in the following application problems. Round to the nearest tenth of a percent. (See Examples 2–5.) 21. ADVERTISING

the assembly lines. Find the percent of workers that will be laid off. 22. 23. WOMEN IN THE MILITARY A recent study by Rand’s National Defense Research Institute examined 48,000 military jobs, such as Army attack-helicopter pilot and Navy gunner’s mate. It was found that only 960 of these jobs are filled by women. What percent of these jobs are filled by women? 23. indicates an exercise that is related to the Case in Point feature. M03_CLEN8052_13_SE_C03.indd 124 8/19/14 1:06 PM

M04_CLEN8052_13_SE_C04.indd 179 x - 17.5 = 50 x - 17.5 + 17.5 = 50 + 17.5 Add 17.5 x = 67.5 6x = 72 6x 72 = Divide by 6 6 6 x = 12 10y 10y - 8y 2y 2y 2 y 151p 15p 15p - 15 12p 12p - 15 - 12 - 15 - 3p - 15 + 15 12p 12p 12 = 8y + 42 = 8y + 42 - 8y Subtract 8y = 42 42 = Divide by 2 2 = 21 3p + 2 3p + 2 By distributive property 3p + 2 - 3p Subtract 3p 2 2 + 15 add 15 17 17 = Divide by 12 12 5 p = 1 12 = = = = = = 7 + x y + 12 z - 12 2A 19t T .68 81P + 12 8/18/14 1:24 PM 180