SBAC Review 3/26

Choose all statements that are correct:

• 5/(20x) = 1/(4x) has no real solutions

• 5/(20x) = 1/(4x) has many solutions solutions

• 3x = 4 + 5x has one real solution and x=2

• √(2x+3) + 6 =0 has no real solutions

• √(2x+3) + 6 =0 has many real solutions

Given the systems of inequalities

y≤ -1/2x +3

y ≥ 2x-2

Choose all correct statements:

• The top left should be shaded because it is the solution region.

• The top right should be shaded because it is the solution region.

• The bottom left should be shaded because it is the solution region.

• The bottom right should be shaded because it is the solution region.

• Both the lines should be dotted instead of solid

Which inequality represents all possible solutions of -6n < -12

• n < -1/2

• n > 72

• n < 2

• n > 2

• n < 1/2

Choose all of the correct ratios for the triangle in the picture

• Sin (B) =21/29

• Sin (B) =20/29

• Cos (A) =21/29

• Tan (B) =21/29

• Tan (A) =21/20

The depth of a river changes after a heavy rainstorm. Its depth, in feet, is a model as a function of time, in hours. Consider this graph of the function. What is the average rate of change of the depth of the river, measured as feet per hour, between hour 9 and hour 18

• 3

• 1/3

• -3

• 11/24

• -1/3

Which of the following could be used to find the length of side RS?

• 21 Tan (R)

• √ [(21)²+(35)²]

• 35 Sin (R)

• 21 Tan (T)

• 35 Cos (R)

Use the Quadratic Formula to solve the Quadratic Equation.
x² + 4x - 9

• -2 ± √13
• -2 ± 2√7
• -2 ± √7
• -2 + √7

Which number is a rational number?

• 1/4

• π

• √3

Is the following number rational or irrational?

√7

• Rational

• Irrational

Is the following number rational or irrational?

√25

• Rational

• Irrational