Math Algebra ACT Practice

When x = 3 and y = 5, by how much does the value of 3x² – 2y exceed the value of 2x² – 3y ?

• 4
• 14
• 16
• 20

What is the value of x when 2x + 3 = 3x – 4 ?

• -7
• -1/5
• 1/5
• 7

What is the greatest common factor of 42, 126, and 210 ?

• 2
• 6
• 21
• 42

Sales for a business were 3 million dollars more the second year than the first, and sales for the third year were double the sales for the second year. If sales for the third year were 38 million dollars, what were sales, in millions of dollars, for the first year?

• 16
• 17.5
• 20.5
• 22

The length, in inches, of a box is 3 inches less than twice its width, in inches. Which of the following gives the length, l inches, in terms of the width, w inches, of the box?

• l = 2w + 3
•  l =  w – 3
• l = 2w – 3
•  l =  w + 3

In quadrilateral PQRS below, sides PS and QR are parallel for what value of x ?

• 158
• 110
• 70
• 120

How many irrational numbers are there between 1 and 6 ?

• 1
• 3
• 4
• Infinitely Many

If xy = 144, x + y = 30, and x > y, what is the value of x – y ?

• 18
• 22
• 4
• 24

Choose the letter that represents the missing length in the figure

• 12
• 10
• 7
• 6

Which of the following is the sine of A in the right triangle below?

• 5/13
• 5/12
• 12/5
• 12/13