Which ordered pair is the vertex of y = |x| +4 ? a. (0, 4) b. (0, –4) c. (–4, 0) d. (4, 0)

The cost of producing 4 metal units is $204.80. The cost of producing 8 units is $209.60. What will it cost to produce 14 units? a. $214.40 b. $219.20 c. $216.80 d. $218.00

What is the value of the function f(x) = 2x – 5 when x = 22? a. 105 b. 49 c. 17 d. 39

Which equation represents a horizontal line? a. y = 2 b. y = x + 1 c. x = y + 2 d. x = 2