A college student earns $21 per day delivering advertising brochures door-to-door, plus 50 cents for each person he interviews. How many people did he interview on a day when he earned $61.50
Let each person interviewed be p. We have an earnings equation E(p):
E(p) = 0.5p + 21
The problems asks for p when E(p) = 61.50
0.5p + 21 = 61.50
To solve for p, we type this equation in our search engine and we get:
p = 81
Let each person interviewed be p. We have an earnings equation E(p):
E(p) = 0.5p + 21
The problems asks for p when E(p) = 61.50
0.5p + 21 = 61.50
To solve for p, we type this equation in our search engine and we get:
p = 81