Cpm Algebra

Describe the sequence as arithmetic, geometric, both or neither.
-5, 5, -5, 5, -5, ...

• Arithmetic
• Geometric
• Both
• Neither

In seven years, Seta’s son Stu is leaving home for college. Seta has $5000 now and has found a bank that pays 7.75% interest yearly. Which equation models how much money will she have for Stu’s first year of college?

• y = 5000(1.0775)^x
• y = 5000(1.775)^x
• y = 7.75x + 5000
• y = 1.0775x + 5000

Eight years ago, Rudi thought that he was making a sound investment by buying $1000 worth of Pro Sports Management stock. Unfortunately, his investment depreciated steadily, losing 15% of its value each year. Which equation models the value of the stock now?

• y = 1000(1.15)^x
• y = 1000(.15)^x
• y = 1000(.85)^x
• y = 8(.15)^x

Classify the following equation:
f(x) = x² - 3x - 4

• Absolute Value
• Exponential
• Linear
• Quadratic

Factor the polynomial:
2x² + 5x + 3

• (x + 3)(2x + 1)
• (x + 5)(2x + 1)
• (x + 1)(2x + 3)
• (x + 1)(2x + 5)

Solve the quadratic.
x² - 6x + 8 = 0

• x = -4 or -2
• x = 4 or 2
• x = 4 or -2
• x  = -4 or 2

Which inequality is represented in the graph?

• y > 4x - 2
• y < 4x - 2
• y > 1/4x - 2
• y < 1/4x - 2

What would be the first step to solve using the elimination method?
6x - 2y = -16
4x + y = 1

• Multiply the second equation by 2
• Multiply the second equation by -2
• Add the 2 equations together
• Subtract the 2 equations

Which system of equations represents the situation:

An adult ticket at a theme park costs $24.95 and a child’s ticket costs $15.95. A group of 10 people paid $186.50 to enter the park.

• 24.95a + 15.95c = 186.50

  24.95a + 15.95c = 10

• 24.95a + 15.95c = 186.50

  a + c = 10

• a + c = 186.50

  24.95a + 15.95c = 10

• 24.95a • 15.95c = 186.50

  a • c = 10

Solve for x.

• x = -2
• x = 2
• x = -7
• x = 7