Blade-z manufactures roller blades. the production facility has fixed costs of $400 a day and total production costs of $3,400 per day at an output of 100 pair of skates per day. which of the following equations represents the daily production cost for blade-z based on the number of skates manufactured? (let c(x) represent the daily production cost and x represent the number of pairs of skates manufactured.)
a. c(x) = 34x
b. c(x) = 30x - 400
c. c(x) = 30x + 400
d. c(x) = 34x + 400