Algebra Test 1 Review

What is the x-intercept?

• (0,4)

• (2,0)

• (0,2)

• (4,0)

What is the y-intercept?

• (0,4)

• (2,0)

• (0,2)

• (4,0)

On what interval is the graph positive?

• x < 2

• x > 2

• all real numbers

• { 0, 1, 2, 3, 4}

Kori borrows money from her parents. Each week, she pays them back the same amount.  The total amounts she owes her parents after weeks 1, 2, 3, and 4 are $100, $80, $60, and $50, respectively. Which explicit equation represents this scenario?

• f(x) = 120 - 20x

• f(x) = 20x + 120

• f(x) = 80 - 20x

• f(x) = 20x - 80

Which is a solution to y < 3x - 50

• (0, 0)

• (0, -50)

• (20, 5)

• (- 10, 5)

Piper works part time at a local farm. She makes $15 an hour for cleaning the animals and $10 an hour for feeding them. Because Piper is a student, she cannot work more than 18 hours a week. Which system of inequalities represents the number of hours she will work if she wants to earn at least $250 each week?

• x + y > 18

  15x + 10y > 250

• x + y ≤ 18

  15x + 10y ≥250

• x + y ≤ 18

  15x + 10y ≤250

• 15x + 10y ≤18

  x + y > 250

If f(x) = -3x +5 and the domain of f is {2,4,6}, what is the range of f(x)?

• all real numbers

• {2, 4, 6}

• {-1, -7, -13}

• {-6, -12, -18}

If f(x) = 5x + 7, then what is f(x - 3)

• 5x - 22

• 5x - 7

• 5x + 8

• 5x - 8

If a₅ = 6 and a_n = a_n-1 + 5, then what is a₉

• 5

• 6

• 21

• 26

Jamison belongs to a DVD club. The membership fee is $25 plus he pays $3.50 for each DVD rented.  He just received notice that the membership fee was decreasing to $20. Which parameter (characteristic) is changing in this scenario?

• slope

• y-intercept

• x

• growth factor