Austin is surfing the net and comes across Electronics-R-Us. He decides to purchase a few DVDs. The equation c = 19.99n + 4.99 can be used to find the total cost, c, of purchasing n DVDs from this online store. What is the dependent quantity of this relationship? F. the number of DVDs (n)
G. $4.99
H. $19.99
J. the total cost (c)

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it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

unless if u could do my questions, if not i wouldn't want to

hi there!

first we need to find out how much they are adding to each number to make the next number.

ex: 4 + 4 = 8, 8 + 8 = 16, and so on.

so continuing with 32,

32 + 32 = 64

64 + 64 = 128

128 + 128 = 256

256 + 256 = 512

4, 8, 16, 32, 64, 128, 256, 512

the 8th term of the sequence will be 512

hope this ! ~