Question

Vincent works in a factory of eyeglasses. He's paid 20 pesos per eyeglass for the first 10 eyeglasses, 50 pesos for the next 10 eyeglasses, and 75 for each set of 10 eyeglasses in excess of 20. Write a piecewise function G(x) that represents Vincent's earnings.
oobleck
just write what they told you, using math.
G(x) =
{20x for x ≤ 10
{200+50x for 10 < x ≤ 20
{700+75x for x > 20