ACP Review day 1

What is the first step in solving 2x-4(x-5)=10?

• Add 4 to both sides

• Add the 2x and the x

• Distribute -4 to x and -5

• Subtract 2x-4

Which step is incorrect?

120=4(7a+2)

Step 1: Distribute

120=28a+8

Step 2: Subtract 8 from both sides

112=28a

Step 3: Divide by 28

a=4

• Step 1

• Step 2

• Step 3

• Problem is worked correctly

What is the solution to 4(x+2)=16?

• -2

• 1

• 0

• 2

Which value x makes the equation 3(x-6)+2x=22 true?

• x=8

• x=18

• x=2

• x=3

What is the solution to 7(5+k)=8(k+4)?

• 3

• -3

• 8

• 1

A student is taking a test that has 10 questions on it. The student's score is a function of how many questions he misses: f(x)=100-10x, where x is the number of questions incorrect. What is the domain?

• 0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16

• 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

• 0 < x < 10

• x < 10

Speedy Boat Rental charges a $15 deposit fee plus $2 for each hour of use to rent a paddle boat. The equation: C=2h+15. If Frank wants to rent the boat from to 3 to 6 hours, what is the domain and range?

• Domain: 3 < x < 6

  Range: 21 < y< 27

• Domain: {3, 4, 5, 6}

  Range: { 21, 23, 25 , 27}

• Domain: 3 < x < 6

  Range: 21 < y < 27

• Domain: { 21, 23, 25 , 27}

  Range: {3, 4, 5, 6}

What is the domain of the graph?

• All Real Numbers

• -4 < x < 7

• -2 < x < 6

• -4 < x < 6

What is the domain of the function?

• $x>3$

• $x\ge-3$

• $y\le4$

• $y<4$

What is the Range of the graph?

• -7 ≤ x < 5

• -3 ≤ x < 1

• -3 ≤ y < 1

• -7 ≤ y < 5