Let the total amount earned at a given time be y, if x is the number of hours worked and amount earned per hour is $9, thus the equation representing this information will be:
Total amount earned=(number of hours)*(amount earned per hour)
hence:
y=9*x
y=9x
Answer y=9x
X² + 6 = 87
<u> - 6 - 6</u>
x² = 81
x = <u>+</u>9
x = 9 U x = -9
The solution set is equal to D. {<u>+</u>9}.
Answer:
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