Aprinting company uses the formula c=0.5x+10 to find the cost of printing x business cards which equation correctly solves the formula for x?

C=0.5x + 10

Where:
C = total cost of printing
x = number of business cards printed
0.5 = variable cost of printing, this cost depends on the number of business card
10 = fixed cost of printing, this cost stays the same regardless of the number of business card printed.

C = 0.5x + 10  ; derive the formula of x.

C - 10 = 0.5x

(C - 10)/0.5 = x

Answer d; a supplementary angle = 180°, so if that angle = 150°, y would = 30°.