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
It's also known as a acute triangle.
Yes it is 20 ft. 4 3 foot planks is 12ft. and 6 16 in planks are 96 inches, which divided by 12 is 8 (feet) so 12 + 8 is 20
12:3 3/10 :5.5 is the answer
