7th Staar Practice

• 10 in

• 5 in

Answer explanation

All pie charts are percent proportions, so use WKU.

W K U

inches .25% x=2.5

feet 2 20

At an assembly 7 out of the first 10 students who entered the gym were carrying a backpack. Based on the information, if 700 students were at the assembly, how many students should be expected to be carrying a backpack?

• 70

• 49

• 490

• 1000

Answer explanation

All pie charts are percent proportions, so use WKU.

W K U carry bp 7 x=490

total 10 700

Use the table to make your own probability table.

P(blue)______

Whole

• A
• B
• C
• D

Answer explanation

P(blue)_14_/2 =7_

Whole 50 /2 =25

All pie charts are percent proportions, so use WKU.

W K U

housing _% x___

total 100 5000

• A
• B
• C
• D

Answer explanation

All pie charts are percent proportions, so use WKU.

W K U

housing 30% x=1500___

total 100 5000

Mya needs 1⅔ pounds of clay to make one pot.  What is the greatest number of identical pots she can make from 15 pounds of clay? Hint: (There is a ratio here (WKU)

• 6
• 8
• 9
• 25

Answer explanation

W K U

pounds 1.66 15___

pot 1 x=9

Ethan can drive his car 130 miles on 4 gallons of gas.  At this rate, how many gallons of gas will Trey need in order to drive 195 miles? 

• 16.25 gal
• 32.5 gal
• 4.5 gal
• 6 gal

Colton wants to spend no more than $16 in the batting cages at the Sandlot.  The cost of admission is $3.25.  Each round in the batting cages costs $1.50.  Which inequality can Colton solve to find the number of rounds, n, that he can buy? 

• 1.50 + 3.25n ≥ 16
• 3.25n − 1.50 ≤ 16
• 3.25 + 1.50n ≤ 16
• 3.25 + 1.50n ≥ 16

The selling price of a house dropped from $250,000 to $210,000 over a period of 5 years. By what percentage did the selling price decrease?

• 16%

• 19%

• 40%

• 23%

What is the linear equation of the table of coordinates below?

• Y = 1/2 X + 4

• Y = -1/2 X + 4

• Y = 2x - 4

• Y = 4X + 2

Use positive numbers for elevations above sea level and negative numbers for elevations below sea level. Emmy's elevation is 6.5 meters at the beginning of a hiking trail. After walking 25 minutes, she descended 12.2 meters. What is her new elevation?

• -18.7 meters

• 5.7 meters

• -6.3 meters

• -5.7 meters