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?

Expression: 20x + 9y = earnings

20 in 20x is the coefficient because 20 is the numerical value that is multiplying the variable x. Generally, the coefficient is placed before the variable. 

The letter x in the term 20x is a variable because it is an unknown and changeable numerical value. The letter x can represent different numbers.

20x is a term in the expression. Terms are parted by a addition or subtraction signs. 

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