The equation R=10a-20 represents the revenue R (in dollars) you make by spending A dollars on advertising. You revenue totaled $
110. How much did you spend on advertising
2 answers:
R = 10a - 20
ur revenue totaled 110...so R = 110
110 = 10a - 20
110 + 20 = 10a
130 = 10a
130/10 = a
13 = a <== so u spent $13 on advertising
Answer:
13 dollars
Step-by-step explanation:
We have that the equation that represents the revenue R in dollars is:
R=10a-20
<em>Where:</em>
<em>R= revenue</em>
<em>a= spending dollars on advertising</em>
We know that R= 110 dollars, now we have to substitute in the formula and solve:
<em>110 = 10a-20</em>
<em>Solving:</em>
<em>110+20 = 10a</em>
<em>130 = 10a</em>
<em>130/10 = a</em>
13=a
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