Math 083 Practice Test | Answer Key

University:
Santa Ana College
Course:
MATH 083 | Beginning and Intermediate Algebra for Liberal Arts and Social Science
Academic year:

2019
Views:

368

Pages:

5
Author:

Nathen Rose

Practice Test 7&8 Name:___________________________________________________ Simplify the expression by combining like terms. 1) 6b - 4b + 2 2) 8x + 7 + 4x + x + 3 Multiply. 3) 3(7x + 6 ) Simplify the expression. 4) -2(5y + 4) - 4 5) 7x - 3 (5 - x) + 36 6) 3(-2x + 2) - 5 (x - 3 ) Solve. 7) x + 5 = -28 + 9 8) 11w = 10 + 10w 9) 5x - 4x - 8 = -8 10) 0.4x = -40 1 11) - r = 2 5 1 Solve. 12) -6x + 7x = 5 13) 8x - 12x = 42 - 18 14) 5 x = 33 + 7 6 Solve the equation. 1 15) x + 40 = 0 4 16) -2x - 4 = 10 17) 1 x+7 =3 5 18) 5 n= 1 n+ 2 3 6 6 2 19) 1.4x + 1.6 = -31.3 + 6.1x 20) 9x + 29 = 2x + 1 21) 6(x - 5 ) - (5x - 9 ) = 8 22) 3(y + 2) = 4(y - 7) Solve. 23) Nine times a number, added to 5 is 23. Find the number. Solve the linear equation. 24) 12(5x - 4) = 5x - 4 25) x= x +9 2 9 2 3 26) x +8 + x - 3 = 5 4 4 2 27) 1.4x + 4.4 = 0.8 x + 1.46 28) -3(x - 3 ) - 39 = 3x - 6(x + 2) 29) 25x + 3(x + 1) = 28(x + 1) - 25 Translate the sentence into a mathematical statement. Do not solve the equation. 30) If 3 times a number is added to -6, the result is equal to 9 times the number. 4 Answer Key 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11) 12) 13) 14) 15) 16) 17) 18) 19) 20) 21) 22) 23) 2b + 2 13x + 10 21x + 18 -10y - 12 10x + 21 -11x + 21 -24 10 0 -100 -10 5 -6 48 -160 -7 -20 1 7 -4 29 34 2 4 24) 5 25) 26) 27) 28) 29) 30) 81 7 {1} {-4.9 } contradiction Thus, no solution infinite solutions 3x + (-6) = 9x 5

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