CAASPP Practice Algebra

Which inequality represents the statement below?

  One more than 2 times n is greater than 21. 

• 2n > 21

• 1n + 2 > 21

• 2n + 21 > 1

• 2n + 1 > 21

Mr. Hall has $216 to spend on supplies for his classroom. He will buy a bookshelf and some books. The bookshelf costs $81. He will buy books that cost $3 each. Which inequality can be used to find all the possible numbers of books (x) that Mr. Hall can buy?

• x ≤ 45

• x ≥ 45

• x ≤ 99

• x ≥ 99

An author receives $0.75 for each hardcover book or paperback book that is sold. There were x hardcover books and 42,000 paperback books sold of her most recent book. The author received a total of $60,000 for the book sales. The equation below can be used to determine the number of hardcover books that were sold.
0.75(x + 42,000) = 60,000
How many hardcover books were sold? 

• 18,000

• 24,000

• 28,500

• 38,000

The bottles of juice that Craig usually buys each have x ounces of juice in them. Another company makes bigger bottles of juice that each have 10% more juice in them than the bottles that Craig usually buys. Craig buys 8 bottles of the bigger size. The total amount of juice, in ounces, he buys is represented by the expression shown below.
8(x + 0.1x)
Which expression also represents the total amount of juice, in ounces, Craig buys?

• 0.8x

• 1.8x

• 8.1x

• 8.8x

Solve for x if :
f(x) = 35
f(x) = 2x + 10

• 35

• 12.5

• 2

• 10.5

What is the value of x in:
f(3) = 2x + 1

• 3

• 2

• 1

• 0

What is the value of x in:
f(4) = 3x - 1

• 11

• 4

• -1

• 0

What does x equal in the function:
f(-11) = 5x + 1

• -54 

• 5

• 1

• -11

Solve for f(5):
f(5) = -x + 4

• 9 

• 1

• -1

• -9

What are the variable(s) in this expression?
6g⁴ + 5h³ + j - 90

• g, h, j

• 6, 5, 1

• 4, 3

• 90