8th Math STAAR

Triangle 1 is dialated by a scale factor of 4.1 using the origin as the center of dialation to create triangle 2. Which statement about the area and perimeter of triable 2 is true?

• The perimeter is 4.1 times the perimeter of Triangle 1, and the area is 4.1 times the area of Triangle 1.

• The perimeter is 8.2 times the perimeter of Triangle 1, and the area is 8.2 times the area of Triangle 1.

• The perimeter is 4.1 times the perimeter of Triangle 1, and the area is 16.81 times the area of Triangle 1.

• The perimeter is 16.81 times the perimeter of Triangle 1, and the area is 16.81 times the area of Triangle 1.

Tags

CCSS.7.G.A.1

A family has a hot dog cookout every year. The scatterplot shows the number of people who have attended each cookout and the number of hot dogs that were eaten each year.

This year 45 people are expected to attend the cookout. Based on the scatterplot, about how many hot dogs should the family prepare?

• 83

• 52

• 36

• 40

A gas company charges $16 monthly service fee and $0.6924 per hundred cubic feet of natural gas used during a month. Which equation best represents y, the gas company's monthly charges in dollars for using x hundred cubic feet of natural gas?

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Which set of side length measurements in meters does NOT make a right triangle?

• 9m 11m 13m

• 18m 24m 30m

• 7m 24m 25m

• 20m 21m 29m

Tags

CCSS.8.G.B.8

A faucet leaks 0.8 gallons of water every 2 hours. Which graph has a slope that best represents the number of gallons per hour leaked by the faucet?

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Tags

CCSS.8.EE.B.5

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

Which graph represents y as a function of x?

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A triangular prism and its dimensions in centemeters are shown in the diagram.

What is the total surface area of the prism in square centimeters?

• 720 cm²

• 600 cm²

• 460 cm²

• 520 cm²

Tags

CCSS.7.G.B.6

A total annual cost to attent a community college is $4,000. The college offered a high school senior a scholarship for $1,500. The student can get a student loan for $1,000 but will need to earn enough to pay the remaining cost. It is 5 months until the remaining cost must be paid. What is the minimum amount the student needs to earn per month to save enough money to pay the remaining cost?

• $300

• $600

• $500

• $800

Tags

CCSS.6.EE.B.7