Question

The table shows the daily pay in dollars, f(x), earned by a salesperson who makes x number of sales.

x 0 1 2 3 4 5
y 200 250 300 350 400 450
Choose the function that represents the data.

f(x) = 50x2 + 200
f(x) = x50 + 200
f(x)= x/50 +200
f(x) = 50x + 200

Answer 1

f(x) = 50x + 200

Reason: when x = 0, f(0) = 200 (base pay), and each additional sale adds $50 (250 − 200 = 50), so the slope is 50.