If f(x) = _x_2 – 5 for all values x and f(a) = 4, what is one possible value of a?

An outpost has the supplies to last 2 people for 14 days. How many days will the supplies last for 7 people?

Let and be functions such that , and . Which of the following is equal to ?

f(x) = 4x + 2

g(x) = 3x - 1

The two equations above define the functions f(x) = g(x). If f(d) = 2g(d) for some value of d, then what is the value of d?

The cost of a cell phone plan is $40 for the first 100 minutes of calls, and then 5 cents for each minute after. If the variable x is equal to the number of minutes used for calls in a month on that cell phone plan, what is the equation f(x) for the cost, in dollars, of the cell phone plan for calls during that month?

Let the function f be defined by f(x)=x-t. If f(12)=4, what is the value of f(0.5*t)?

The function f, where f(x) = x2 + 6x + 8, is related to function g, where g(x) = 5 f(x-2). What is g(3)?

The rate of a gym membership costs p dollars the first month and m dollars per month every month thereafter. Which of the following represents the total cost of the gym membership for n months, if n is a positive integer?

Let f(x) be a function with at least one root. All of the following graphs must have the exact same root(s) as f(x) EXCEPT: