Math Functions Review

f(x) = 6x² + 3x + 2 and g(x) = x - 7
Find f(x) * g(x)

• 6x³ - 39x² - 19x + 14

• 6x³ - 39x² - 21x - 14

• 6x³ - 39x² - 19x - 14

• 6x³ - 45x² - 19x + 14

Question 8

• A

• B

• C

• D

given the following functions:
y=3x - 4  and   3y=x - 12
What is the difference in the values of the y-intercepts?

• 8

• -16

• 4

• 0

• The function f(x) has a greater y intercept than the function g(x)
• The function g(x) has a greater rate of change than the function f(x)
• The function g(x) has a greater y intercept than the function f(x)
• The rate of change for both g(x) and f(x) are equal 

Compare the initial values and rate of change of both functions.

• Both functions have the same initial value and rate of change.

• The functions have different initial values and different rates of change.

• The rates of change are the same, but the initial values differ.

• The initial values are the same, but the rates of change differ.

Question 7

• A

• B

• C

• D

To celebrate the holiday season this year, Six Flags has created an extreme six-lane, tubing hill with real snow called the “Superman’s Awesome SNOW Tubing Ride.”  The cost of each ticket for one day is $35.  The number of tickets purchased by groups is given by the domain {3, 8, 12}.  Which would be a reasonable range for the total cost of the tickets the groups would pay? 

• {3,8,12}

• {105,280,420}

• {3,8,12,105,280,420}

• {38,43,51}

G(m) represents the gallons of gas remaining after m miles driven. What is DOMAIN, for this situation? (click to zoom)

H(s) represents the height in feet based on time, s, in seconds. What best represents the RANGE?

Given the sequence:
 25, 21, 17, 13,...
Write the explicit equation that models the sequence.

• a_n = 25 + 4(n-1)

• a_n = 25 + 21(n-1)

• a_n = 25 - 4(n-1)

• a_n = 13 + 4(n-1)