Math Reflections

3x - 2x + 4 = 5x - 4x - 8

• 3

• 6

• -3

• no solution

Troy made two deliverers for his boss. The graph shows Troy's drive from his home to make the deliveries and then returning home. Which intervals show Troy's distance from home constant?

• A and C

• B and D

• C and E

• B, D, and E

Tags

CCSS.HSF.IF.B.4

Find f(-10) f(x) = 7x - 5

• 90

• -75

• -65

• 65

Tags

CCSS.HSF.IF.A.2

Identify the unit rate in the graph.

• 60

• 120

• 1

• 240

Answer explanation

you can find slope for unit rate. since this graph is proportional you can say y/x

120/2 is 60 y/x the slope is also going up

60 and over 1. rise over run

Tags

CCSS.8.EE.B.5

The graph shows the number of copies a copier can make. What is the unit rate?

• 6

• 1/25

• 15

• 25

Tags

CCSS.7.RP.A.2D

What is the perimeter of a square with an area of 324 cm²?

• 18 cm

• 36 cm

• 72 cm

• 144 cm

Answer explanation

You are given the area. That means you can find the sides. Once you know the sides you add all sides to get perimeter.

if arear is 324 you can get square root of it to find sides because you know they squared the sides to get 324.

Square root of 324 is 18 and then could multiply by four or add all 4 sides 18+18+18+18

Tags

CCSS.4.MD.A.3

Convert this number into scientific notation: 0.068

• 6.9 x 10⁶

• 6.8 x 10^-9

• 6.8 x 10^-2

• None of the above

Convert this number to standard notation: 1.4 x 10^-2

Convert this number into scientific notation: 950,000

• 9.5 x 10⁵

• 9.5 x 10^-9

• 9.5 x 10²

• None of the above

Which value is the greatest

• 5.0 x 10^-9

• 5.0 x 10^-4

• 5.0 x 10⁶

• 5.0 x 10⁸

Tags

CCSS.8.EE.A.3