Question

Cory earns $20 for every lawn he mows and $9 for every hedge he trims. He uses the expression 20x + 9y to keep track of his earnings.

Part A: Identify the coefficients and variables in the expression.

Part B: How many terms are in the expression, what are they, and how do you know?

Part C: Which term in the expression shows the total earned from trimming hedges?

Answer 1

coefficient -- the number that is multiplied by a variable (letter).
Example : 25y....25 is the coefficient : 30x....30 is the coefficient

variable -- a symbol for a number that is not known yet...usually a letter
Example : 25y...y is your variable : 30x....x is your variable

term -- either a single number, or numbers and variables multiplied together
Example :
2x + 7y = 5.....the terms are 2x,7y,and 5
2xy + 7y^2 = 16....terms are 2xy,7y^2, and 16

if it is $9 per hedge....and y stands for how many hedges he trimmed....then the total amount , just for hedges is : 9y