You are at the music store to buy some CDs. You have $45 to spend and
the store sells CDs for $12.99 each. Write an inequality that
represents the number, n, of CDs that you can buy without spending
more money than you have.
2007-08-13 09:08:31 · 5 answers · asked by Berry A 2 in Science & Mathematics ➔ Mathematics
If each cd is $12.99 (assuming no tax) then you can buy n amount of cd's for less then or equal to $45
($12.99)*n
2007-08-13 09:17:35 · answer #1 · answered by USMC_Wifey 3 · 0⤊ 0⤋
Let n = no. of CDs.
$45 < 4n
It means $45 is less than the cost of 4 CDs.
2007-08-17 04:32:44 · answer #2 · answered by Jun Agruda 7 · 3⤊ 0⤋
let x = the number of cds you can buy
12.99x < 45
However, they would probably be tax. In that case, let's assume (my not know where you are) that tax is 5%. Then the inequality would be:
12.99x + .05(12.99)x < 45, which can be simplified further.
2007-08-13 16:22:54 · answer #3 · answered by Marley K 7 · 0⤊ 0⤋
12.99n < or = to 45
12.99 is the price of cd and 45 is the amount you have so 12.99n is the amount n cds would cost you and the formula says it must be less than or equal to 45
2007-08-13 16:48:03 · answer #4 · answered by Jessica F 1 · 0⤊ 0⤋
Without tax?
12.99n >= 45
With tax (t)
12.99n + t(12.99n) >= 45
2007-08-13 16:17:43 · answer #5 · answered by Becky M 4 · 0⤊ 1⤋