Countdown to STAAR #2

Right triangles ABC and DEF are similar. Which of these proportions demonstrate the slope of AC is equal to the slope of DF?

Tags

CCSS.8.EE.B.6

Which of the following could represent the unit side lengths of a right triangle?

• 3, 5, 6

• 7, 12, 15

• 2, 6, 8

• 9, 40, 41

Tags

CCSS.8.G.B.8

David has some money in his savings account at a local bank. He will add the same amount of money to the account each week for the next several weeks. The table shows the amount of money he will have at the end of x weeks.

David originally had ​ (a)   in the savings account and he will add ​ (b)   each week.

• $50
• $20
• $0
• $30
• $45
• $25
• $40

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Video Store A charges a $19.00 account setup fee and $1.90 per movie rental. Video Store B charges a $11.20 account setup fee and $2.50 per movie rental. What number of movie rentals will make the total cost of renting movies from Video Store A equal to the total cost of renting movies from Video Store B?

Mathematical Equivalence

ON

Point P is located at (2, 1) on a coordinate grid. Point P is translated 5 units left and 4 units down to make Point P'. Which of these is closest to the unit distance between points P and P'?

• 6

• 8

• 9

• 13

Tags

CCSS.HSG.CO.A.2

To find out how water usage for residential landscaping may be affected by different levels of seasonal dryness, a city water department recorded the monthly water usage of 3 customers over 4 months with different monthly rainfall amounts. The results are shown on the scatter plot to the left.

Based on the information, the closest estimate for the number of gallons a household might use in a month with 5 inches of rain is ​ (a)   .

• 12,000
• 6,000
• 15,000
• 9,000

The dimensions of a rectangular prism are shown. What is the total surface area of this rectangular prism in square centimeters?

Tags

CCSS.7.G.B.6

A whale descends below the surface of the ocean in search for food. A researcher recorded the whale's depth as a function of time and represented it on the graph.

The whale changed depth by ​ (a)   feet per minute.

• -175
• -200
• -250
• -125

Tags

CCSS.HSF.IF.B.4

Tags

CCSS.8.NS.A.2

Which graph represents y as a function of x?

Groups:

(a) function

,

(b) not a function

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