ACT Practice #3 (Algebra Topics)

Find x if

 $4x+18=38$  

• 3

• 4.5

• 5

• 12

• 20

Tags

CCSS.7.EE.B.4A

Find x if

 $x^2+14=63$  

• 4.5

• 7

• 11

• 14

• 24.5

Tags

CCSS.8.EE.A.2

What is the value of x if

 $0.75x-13=2$  ?

• 11.25

• 14.67

• 15

• 16

• 20

Tags

CCSS.7.EE.B.4A

What is the value of x if

 $2\sqrt{4n}+7=15$  

•  $\sqrt{2}$  

•  $2$  

•  $2\sqrt{2}$  

•  $4$  

•  $8$  

What is the value of x if

 $6x+4=11x-21$  

• 2

• 3

• 4

• 5

• 6

The average of 292, 305, 415, and x is 343. What is the value of x?

• 315

• 337

• 360

• 364

• 382

Tags

CCSS.6.EE.B.7

The expression given is equivalent to which of the following?

 $3x^2y\left(xy^2+4x^3y\right)$  

•  $3xy+12x$  

•  $xy^2+4x^3y$  

•  $15x^8y^5$  

•  $3x^3y^3+12x^5y^2$  

•  $3xy^2+12x^3y$  

Tags

CCSS.HSA.APR.A.1

What does y equal if

 $\frac{y}{y-3}=\frac{42}{39}$  ?

• 39

• 41

• 42

• 45

• 81

Tags

CCSS.HSA.REI.A.2

What are the possible values of s if

 $s^2-4s-6=6$  ?

• -2 and -6

• -2 and 6

• 2 and -6

• -2 and 3

• -2 and -3

Tags

CCSS.HSA-REI.B.4B

If a car travels at 80 miles per hour for x hours and 60 miles per hour for y hours, what is the car's average speed, in miles per hour, for the total distance traveled?

• $\frac{480}{xy}$

• $\frac{80}{x}+\frac{60}{y}$

• $\frac{80}{x}+\frac{60}{y}$

• $\frac{80x+60y}{x+y}$

• $\frac{80+60}{x+y}$

Tags

CCSS.HSA.CED.A.1