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3. Amar and Sang mowed lawns to earn money to go on a trip at the end of the month. They both mowed the same number of lawns. Amar earned $20 for each lawn he mowed in his neighborhood. Sang earned $15 for each lawn he mowed in his neighborhood.
(a) Using a variable, write an expression that describes the total amount of money earned by both boys at the end of the month. Define what the variable represents.
(b) Amar and Sang mowed 10 lawns each by the end of the month. They need $400 for a summer trip. Do they have enough money for their trip? Show or explain your work.

99 POINTS

Respuesta :

smpurvis
(20x10)+(15x10)= y
the variable is the answer or represents it

(20x10)+(15x10)
20x10=200
              +
15x10=150
              =
            350
no they do not have enough they need 50 more dollars in order to have enough.
musiclover10045

A)

Total = y

Number of lawns = x

y = 20x+15x

 combine like terms y =35x

 

B) y = 35x

X = 10 lawns

 Y = 35*10 = 350
  they earned $350, which is less than $400 so they do not have enough for their trip

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