Math homework help problems?

1. 3 (2x-2) - 4 (x+6) = 4x + 8


2. .08x + .06 (x+9) = 1.24


3. x+6/10 + x-4/15 = 1


4. decide whether each equation is a conditional equation, an identity, or a contradiction. give its solution set.


(a) 3x - (2 - x) + 4x + 2 = 8x+3


(b) x/3 + 7 = 5x/6 - 2 - x/2 + 9


(c) -4 (2x - 6) = 5x + 24 - 7x





5. solve for v: -16tsquared + vt - s = 0.


6. solve for r: ar + 2 = 3r - 6t.


7. the 2002 daytona 500 (mile) race was won by ward burton, who averaged 142.971 mph. what was burton's time, to the nearest thousandth?


8. a certificate of deposit pays $2281.25 in simple interest for 1 year on a principal of $36,500. what is the rate of interest?


9. of the 38, 123 officers, stations, and branches of the u.s. postal service in 2001, 27,876 were actually classified as post offices. what percent to the nearest tenth were classified as post offices?


10. tyler mcginnis invested some money at 3% simple interest and some at 5% simple interest. the total amount of his investments was $28,000, and the interest he earned during the first year was $1240. how much did he invest at each rate?


11. two cars leave from the same point at the same time, traveling in opposite directions. one travels 15mph slower than the other. after 6 hr, they are 630 mi apart. find the rate of each car.


13. find the approximate annual interest rate for an installment loan to be repaid in 24 monthly installments. the finance charge on the loan is $200, and the original loan balance is $1920.


14. find the approximate annual interest rate for an automobile loan to be repaid in 36 monthly installments. the finance charge on the loan is $740, and the amount financed is $3600. (round to the nearest hundreth of a percent.) formula for 13 and 14 A = 24f/b (p + 1)|||This is "homework help", not "homework do."





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