A resort hotel has 270 guests. On one day, 6 groups of 11 guests leave to shop and 2 groups of 9 guests go sightseeing. Evaluat
e 270−(6×11)−(2×9) to find the number of guests that are left at the hotel. (10 points!)
1 answer:
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Answer:
a)
b) independent variable: x - number of DVDs rented
dependent variable: y - the monthly cost of rent of x DVDs
c) $26
Step-by-step explanation:
<u>Question:</u>
Your DVD membership costs $16 per month for 10 DVD rentals. Each additional DVD rental is $2.
a. Write an equation in two variables that represents the monthly cost of your DVD rentals.
b. Identify the independent and dependent variables.
c. How much does it cost to rent 15 DVDs in one month?
<u>Solution:</u>
Let x be the number of DVDs rented, and y be the monthly cost of rent of x DVDs.
a) For the first 10 DVDs you should pay $16 and for the next (x - 10) DVDs you have to pay additional $2 per DVD.
Then the total cost is
b) Independent variable is x, dependent variable is y (the cost depends on number of DVDs rented).
c) If x = 15, then
It will cost $26 to rent 15 DVDs.