Algebra Help?

Posted on 2014-11-18 06:27:00 in Math by LEILA

You found a website that lets you download music for your ipod. The website charges $32 for the first 50 songs downloaded and $20 for each additional 50 songs. Write an equation that gives the total cost (in dollars) for the songs as a function of the number of songs purchased. Find the cost to download 250 songs. Determine the maximum number of songs you can buy with a $72 gift card

a.)
Define your two quantities for the problem and identify x as the independent variable and y as the dependent variable.
b.)
What is the rate of change?
c.)
List two ordered pairs that would satisfy this problem.
d.)
Write the equation using point-slope form.
e.)
Is this function discrete or continuous?
f.)
What is the cost of 250 songs?
g.)
How many songs can you buy with a $72 gift card?

Please help i have ZERO clue how to do this!!!!

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