algebra - chapter 3

solving equations using addition or subtraction

100

7/10 - a = 1/2

What is 1/5?

200

f- (-1/8) = 3/10

What is 7/40?

300

c + 5.4 = -11.33

What is -16.73?

400

x + 3/8 = 1/4

What is -1/8?

500

t - (-46.1) = -3.673

What is -49.773?

solving equations using multiplication or division

100

c /-59 = -7

What is 413?

200

z /6 = -5/12

What is -5/2?

300

0.0022b = 0.1958

What is 89?

400

15 3/8 =-5p

What is -3 3/40?

500

-18 1/4 = 2.5x

What is -7.3?

multi-step equations

100

6(y - 5)= 18 - 2y

What is 6?

200

2.85y - 7 = 12.85y - 2

What is -0.5?

300

0.4(x - 12) = 1.2 (x - 4)

What is 0?

400

3(x + 1) - 5 = 3x - 2

What is all real numbers?

500

(6v - 9) / 3 = v

What is 3?

ratios and proportions

100

x/9 = 0.24/3

What is .72?

200

(6p - 2)/7 = (5p + 7)/8

What is 5?

300

(4n + 5)/5 = (2n + 7)/7

What is 0?

400

Find the percent of change. original: 35mph new: 65mph

What is 86% increase?

500

Find the final price. backpack: $28.95 discount: 10% sales tax: 5%

What $27.36?

formulas and weighted averages

100

2bx - b = -5

What is (-5+ b)/2b?

200

solve for x. (ax + 1)/2 = b

What is (2b - 1)/a?

300

3x - r = r(-3 + x)

What is -2r/(3 - r)?

400

Jason is mixing peanuts and chocolate pieces. Peanuts sell for $4.50 a pound and the chocolate sells for $6.50 a pound. How many pounds of chocolates should he mix with 5 pounds of peanuts to obtain a mixture that sells for $5.25 a pound?

What is 3 pounds?

500

Missoula and Bozeman are 210 miles apart. Sheila leaves Missoula for Bozeman and averages 55 miles per hour. At the same time, Casey leaves Boseman and averages 65 miles per hour as he drives to Missoula. How long before they meet?

What is 1.75 hours?