IA PRACTICE #1 EC

Find the solution to the following inequality:

6(x - 5) < 7x - 4

• x ≥ 26

• x > -26

• x < -26

• -x > 26

What is one point that lies in the solution set of the system of inequalities graphed?

• (0, 4)
• (-4, 1)
• (2, 4)
• (4, -1)

What is the equation for this line?

• y = x - 2
• y = x + 2
• y = 2x
• y = -x + 2

Which correlation coefficient indicates the strongest linear relationship between the variables?

• 0.79
• -0.63
• 0.52
• -0.84

Which function represents exponential decay?

• f(x) = 100(0.9)^x 
• f(x) = 10(1.09)^x 
• f(x) = 1.9^x
• f(x) = ½(9)^x

The function f(x)=3x+10 models the total cost Katie charges to babysit x amount of children. What is the most appropriate domain for the function?

• All rational numbers
• All integers
• All non-negative rational numbers
• All non-negative integers

Select the best choice.

• 1

• 2

• 3

• 4

Hint: Graph the solution set on a number line if needed

• 6

• 8

• 10

• 12

Hint: degree = highest exponent

Leading coefficient = number in front of the variable

• 3x⁴-2x²+4x-7

• 4+x-4x²+5x³

• 4x⁴-3x³+2x²

• 2x+x²+4x³

Which property was used to get to the second line?

• Associative property

• Commutative property

• Distributive property

• Zero property