Name:
Unit 3 Study Guide: Page 1
Block:
7th Grade Math & Compact
Study Guide – Unit 3 Test
Unit 3 Study Guide: Page 2
Unit 3 Study Guide: Page 3
20. Florence has accumulated 5 inches of rain, and the rain depth is increasing by 6
inches every hour. Richland has accumulated 7 inches, and the depth is increasing by 2
inches every hour. In about how many hours will the rainfall of both towns be equal?
In about
_____ hours, the rainfall in both towns will be equal.
Part A (Equation):
Part B (Solution):
21. A pack of cardinal flower seeds costs $4, and a pack of petunia flower seeds costs $2.50. You
buy the same number of packs of each type of flower and spend $39. How many packs of each do
you buy?
Part A (Equation):
Part B (Solution):
22. Jasmine’s cell phone company charges her $35 a month for phone service plus $0.50 for each
text message. How many text messages does Jasmine send in a month if her bill was $52?
Part A (Equation):
Part B (Solution):
Unit 3 Study Guide: Page 4
23. Fred works two different jobs. At the greenhouse he makes $4 per hour, and at the swimming
pool, he makes $5 per hour. How many hours must he work in order to earn $450?
Part A (Equation):
Part B (Solution):
24. A group of 4 friends went to the movies. In addition to their tickets, they each bought a bag of
popcorn for $4.25 and a drink for $2.50. The total cost is $54. Write and solve an equation to find
the cost of one movie ticket.
Part A (Equation):
Part B (Solution):
25. Mike won 55 pieces of gum playing hoops at the county fair. At school he gave four to every
student in his math class. He only has 3 remaining. How many students are in his class?
Part A (Equation):
Part B (Solution):
26. Three students are participating in a 5K (5 kilometers) to raise money for breast cancer
awareness.
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Emma’s sponsors will donate $10 regardless of how far she walks.
Gilberto’s sponsors will donate $2.50 per kilometer (K).
Alana’s sponsors will make a $5 donation plus $.50 per kilometer.
Which student raised the most money per sponsor? Justify your answer (show your work.)