f(x) = mx + b
m = slope = -5
f(2) = 10 = (-5)(2) + b
b = 10 + 10 = 20
Ans. m=-5, b = 20
sales tax = 13.22 * .04
sales tax = .53 (round to the nearest cent)
total cost = cost of item + sales tax
total cost = 13.22 + .53
total cost = 13.75
Well this is pretty easy.
If there are 8 people, with 6 doughnuts in every box, then do 6*4 to give you 24.
If you know you multiplication (recommend practicing), then you would know that 8 is a multiple of 24. So the second step to this word problem is 24/8 to give you the final answer of:
3 doughnuts / person
Fraction is 2.161616/1000000
mixed number is 2 161616/1000000
