Exam Review - Day 2 - Solving Equations and Inequalities

-2(x + 3) - 5 = 11

• x = - 11
• x = 2
• x = 11
• x = -2

4x + 2(x - 6) = 12

• x = 6
• x = 4
• x = 2
• x = -2

-3 − 6(4x + 6) > -111

• x > 3
• x < 3
• x < -3
• x > -3

• No Solution 

• x = 8

• x = -5

• x = 7

Find the error in the problem below

19 - 2k = 3k - 1

+3k +3k

19 + 1k = -1

-19 -19

k = -20

• They should have divided by 1 for the last step

• They should add 19 instead of subtracting 19

• I can not find an error

• Instead of adding 3k they should subtract 3k

Solve for x

3x − 8 ≥ 4(x − 1.5)

• x ≥ 3.5

• x ≤ 3.5

• x ≥ −2

• x ≤ −2

Solve:
C = 2πr, for r

• C + 2π = r
• C - 2π = r
• 2πC = r

CONNOR PURCHASED SCHOOL SUPPLIES FOR HIS ART CLASS THAT COST $1,175 TO REGISTER. HE PAID $14 FOR EACH COLOR OF PAINT PLUS $55 ON A BRUSH SET. WRITE AN INEQUALITY TO REPRESENT THE TOTAL COST OF THE SUPPLIES SO THAT IT IS LESS THAN THE TOTAL COST OF THE CLASS.

Translate the sentence into an inequality.
Seven subtracted from n is greater than or equal to 18.

• n - 7 > 18
• 7 - n ≥ 18
• n - 7 ≥ 18
• n + 7 ≥ 18