Allen is reviewing his receipts from three different visits to a spa, trying to determine the individual costs of his
favorite spa treatments. From his receipts he knows:
A manicure and a back rub together
cost $18.
A back rub and a facial together
cost $19.
A manicure and a facial together
cost $21

93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

hope this

step-by-step explanation: i dont

80% of the cookies

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