1. Price: $40.00, 10% tax, 15% tip
2 answers:
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Assuming you made an error typing the question out, and the formula should say 30g, as it's $30 a round:
11x+11y
11(x+y)
Explanation
Step 1
Let
Carlos earns == 11 per hour
x represents the number of hours he worked in May
the,
the amount he earned in Mayis
y represent the number of hours he worked in June.
the amount he earned in June was
Step 2
the amount of money he earned is May and June is the sum of the values
I hope this helps you