Math Math Algebra and Functions 5

Question 1

The function f(x) = x² - 6x + 5 has its vertex at which point?

Accepted Answer

(3, -4)

Answer

(6, 5)

Answer

(3, 4)

Answer

(-3, -4)

Question 2

If 3^(2x) = 81, what is x?

Accepted Answer

2

Answer

4

Answer

1

Answer

3

Question 3

A store sells pencils for $0.25 each and pens for $1.50 each. Maria buys 12 items and spends $9.00. How many pens did she buy?

Accepted Answer

4

Answer

8

Answer

6

Answer

3

Question 4

Which of the following is equivalent to (x² - 9) / (x + 3) for x ≠ -3?

Accepted Answer

x - 3

Answer

x + 3

Answer

x² - 3

Answer

(x - 3)(x + 3)

Question 5

If f(x) = √(x + 4), what is the domain of f?

Accepted Answer

x ≥ -4

Answer

x > -4

Answer

x ≥ 4

Answer

All real numbers

Question 6

What is the sum of the solutions to 2x² + 4x - 6 = 0?

Accepted Answer

-2

Answer

3

Answer

2

Answer

-3

Question 7

A function is defined as f(x) = (1/2)^x. As x increases, what happens to f(x)?

Accepted Answer

It decreases toward 0

Answer

It increases without bound

Answer

It stays constant

Answer

It decreases without bound