ACT-Math 試験問題を無料オンラインアクセス

Let the function f be defined as f(x) = 5x 2 - 7(4x + 3).
What is the value of f(3)?

• A.-60
• B.-33
• C.-75
• D.-18
• E.-26

Given a positive integer n such that i n = 1, which of the following statements about n must be true? (Note: i 2 = -1)

• A.When n is divided by 4, the remainder is 1.
• B.When n is divided by 4, the remainder is 2.
• C.When n is divided by 4, the remainder is 3.
• D.When n is divided by 4, the remainder is 0.
• E.Cannot be determined from the given information.

Which of the following expressions is a factor of x3 - 64?

• A.x + 64
• B.x + 4
• C.x - 4
• D.x 2 + 16
• E.x 2 - 4x + 16

FILL BLANK
If 6x + 9y - 15 = -6, what is the value of -2x - 3y + 5?

When x = 4 and y = 6, by how much does the value of 3x 2 - 3y exceed the value of 2x 2 - 2y?

• A.15
• B.10
• C.5
• D.20