Foundations of Math Functions Review

What operation would you perform first and then second when solving for m in the following equation?
10 + 7m = 17

• subtract 10, divide by 7
• divide by 7, subtract 10
• multiply by 7, add 10
• add 10, multiply by 7

Solve for n.

• 8
• -7
• -8
• 4

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

Is this graph a function or not a function? 

• Function
• Not a Function 

f(x)=2x+1
If f(x)=4, what is the value of x?

• 3/2
• 2
• 1/2
• 4

Which ordered pair is a solution of
the equation f(x) =(1/2)x?

• (1, 2)
• (4, 1)
• (3, 6)
• (6, 3)

For f(x) = -2x + 4,
find f(-5).

• f(-5) = -6
• f(-5) = -3
• f(-5) = 14
• f(-5) = 2

A Boeing 747 holds 325 passengers.  The function P(x) = 200x - 51 represents the profit made by the airline where x represents tickets sold for the plane.  What is the applicable domain for this problem?

• All real numbers
• All positive numbers
• All positive integers
• All non-negative integers less than or equal to 325

What equation could represent this graph?

• 3x+4y=12
• 4x+3y=12
• x+y=3
• x+y=4

Which situation can be represented by 
y = 17x - 8?

• The number of seeds, y, needed to feed 8 hamsters 17 seeds each.
• The earnings from a lemonade stand, y, selling glasses at 17 dollars each with $8 in the tip jar.
• The cost, y, of buying 17 movie tickets that sell for $8 each. 
• The cost, y, of buying Star Wars figurines at $17 each with an $8 discount.