Answer:
arithmetic
Step-by-step explanation:
that would be Arithmetic
sales equal $15,000
x = amount of sales
f(x) = 500 + 1/6x
3000 = 500 = x/6
2500 = x/6
x = 15,000
Yes, because by dividing x by his equivalent y, you find a constant of proportionality being 10.
x / y = 10
20 / 2 = 10
50 / 5 =10
60 / 6 = 10
70 / 7 = 10
Step-by-step explanation: see attachment below
