7th Grade Fall Semester Exam Review

Over a five-day period, 655 hot lunches were bought at Kingston Junior High. What was the average daily number of hot lunches bought?

• 121

• 131

• 221

• 231

(x + x + 8) × 2 = 44

• x = 9

• x = 7

• x = 6

• x = 8

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The graph below shows the relationship between the radius and circumference of a circle.

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Which table(s) of data illustrate(s) a constant rate of change?

• I and II

• III only

• II and III

• II only

Adrian is designing a map of a garden for his social studies class. On the map, 0.5 inches represents 1 foot in the garden. Which graph best represents this relationship?

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In Mr. Arthur's mathematics class, students were given a rectangular greeting card. The table below shows the length and area of each card. Which equation represents the rate of change between the area of a card, y, with a side length of x?

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A bag of oranges costs $6.40 including tax. There are 16 oranges in each bag. What would be the cost of 50 oranges?

• $3.13

• $19.20

• $25.60

• $102.40

Lillie's grandmother is making potato salad for a family reunion. She uses three potatoes for each person attending the dinner. If she expects 24 people to attend the reunion, which proportion can be used to solve for p, the number of potatoes?

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Lisa and her date spent $87.70. They want to leave a 20% tip. What amount would be reasonable for the tip?

• $10.00

• $20.00

• $25.00

• $31.00