7th Grade Math

Test PracticeT

248 Equations and Inequalities

C 32. REASONING Compare and contrast the solutions of a - 3 = 15 and

a - 3 ≥ 15.

33. OPEN ENDED Write an addition inequality with the solution set graphed
    below.

16 18 20 22 24

34. E WRITE MATH Explain when you would use addition and when you
    would use subtraction to solve an inequality.


35. CATERING The prices that two companies charge for
    an order of appetizers is shown. Food Inc. charges an
    additional fee of $21. Write and solve an equation to
    find how many orders of appetizers you would have
    to order for the costs to be the same. (Lesson 3D)

Solve each equation. Check your solution. (Lesson 3B)

40. 7 x + 21 = 56 41. - 1 = 6 x + 11 42. 3 x - 4 = 14 43. - 2 = 9 x - 65
    35. Which inequality represents a
    temperature that is equal to or
    less than 42°?
    A. t ≥ 42
    B. t > 42
    C. t ≤ 42
    D. t < 42
    36. Which inequality represents the graph
    below?
    
    
    • 5 - 4 - 3 - 2 - 1 0 1 2 3 45
      F. x > 3
      G. x ≥ 3
      H. x < 3
      I. x ≤ 3
    
    
    
    
    
    
    37. Arlo has $25 to spend on a T-shirt and
        shorts for gym class. The shorts cost $14.
        Use the inequality 14 + t ≤ 25, where t
        represents the cost of the T-shirt. What is
        the most Arlo can spend on the T-shirt?
        A. $9
        B. $10.99
        C. $11
        D. $11.50
    
    
    38. SHORT RESPONSE Write and solve an
        inequality for the following sentence: Jan
        has $50 in her savings account and needs
        to save at least $268 for camp this summer.
        What is the least amount that she can
        save to meet her goal?
    
    
    
    

Company Cost

Catering Co. $25

Food Inc. $18

242_253_C04L4_895130.indd 248 12/31/09 4:06 PM