A hotel charges a service fee of $1.00 per day to use its copy machine. In addition, there is a charge of $0.10 per copy made. W
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ANSWER
EXPLANATION
We want to determine the value of f(3) that will lead to an average rate of change of 19 over the interval [3, 5].
The average rate of change of f(x) over the interval [a,b]:
If the average rate of change over the interval [3, 5] is 19, then;
From the to table f(5)=13
Let's assume
number of shorts is x
we are given
People bought 2 times as many T-shirts as shorts
so, number of T-shirts is 2*x=2x
Dots sells T-shirts ($3) and shorts ($7)
so, total price of T-shirts
so, total price of shorts
now, we are given
total sales were $520
so,
total price of T-shirts+total price of shorts = total sales
we will get equation
now, we can solve for x
so,
number of shorts is 40
number of T-shirts is 2*40=80............Answer