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.
Answer:
20x-21y+14
Step-by-step explanation:
1/5(100x-105y+70)
20x-21y+14
Answer:
6.6% = tax rate
Step-by-step explanation:
The first step is to find out how much was paid in tax
24.91 - 23.37 =1.54
The tax is 1.54
The tax is the original price * tax rate
1.54 = 23.37 * tax rate
Divide each side by 23.37
1.54/23.37 = tax rate
.065896448= tax rate
Changing to percent form
6.6% = tax rate
Answer:
w
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Step-by-step explanation:
Answer:
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Step-by-step explanation:
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