Scott ordered four books by mail. Each book cost the same amount. The total cost was 33.00, including a shipping charge of $ 5.00. What is the cost of one book?
reminder: allgebraric expressions. how do i make the expression and then solve it?
2007-04-21 09:03:58 · 15 answers · asked by mz.personality 1 in Education & Reference ➔ Homework Help
geeezzz -- look at all the wrong answers!
Ok, here you go:
Let x = the cost of one book (all 4 cost the same right?)
So 4x + 5 = 33
Solve for x:
4x = 28
x = 7
So each book cost $7.00. Multiply by 4 and add the shipping charge and voila -- your total is $33.00
good luck!
2007-04-21 09:13:02 · answer #1 · answered by birdwoman1 4 · 1⤊ 2⤋
Let $x be the cost of one book.
The $33 is made up of the total cost (4x) of 4 books and the shipping charge ($5).
The equation is:
4x + 5 = 33
Soliving it.
Subtract 5 from each side:
4x = 28
Divide by 4:
x = 7
The cost of one book is $7.
Check it.
Four books cost $7*4 = $28.
Shipping cost $5.
Total cost = $28 + $5 = $33.
2007-04-21 09:14:07 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Well if the total cost was $33.00 then you would subtract the $5.00 shiping cost, because that isn't included in the price of the books, and you end up with $28.00 which you divide by the 4 books giving you $7.00 a book.
4x=$33.00-$5.00
4x=$28
4/4 x = 28/4
x=$7.00 per book
2007-04-21 09:18:43 · answer #3 · answered by Kevin57 4 · 0⤊ 0⤋
the total price of 33 INCLUDED the $5, so your expression ought to be:
let x = the cost of 1 book
then
4x = 33 - 5
4x = 28
x = 28/4
and therefore
x = 7
2007-04-21 09:15:42 · answer #4 · answered by MissPriss 7 · 0⤊ 0⤋
x = 7
2007-04-21 09:13:56 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Let x represents the cost of the each book
4x = (33-5)
4x=(28)
x=(28/4)
x=7
therefore, each book cost $7.00 (excluding the tax)
including the tax it will cost $9.50
2007-04-21 09:14:12 · answer #6 · answered by blue angel 1 · 0⤊ 0⤋
Your algerbraic expression should be something like this.
(33-5)/4 = x
Then you subtract 5 from 33.
33-5 = 28
Write new expression.
28/4 = x
Divide 4 from 28
28/4 = 7
So x = 7
Then answer your question with a sentence.
The cost of each book was $7.
Hope that helped.
2007-04-21 09:11:23 · answer #7 · answered by telly1989 2 · 0⤊ 0⤋
$33=4x+5 equation
- 5=4x subtract 5 in both side 5-5=0; 33-5=28
28=4x it equal 28=4x
28/4=4x/4 divide 4x in both sides 4x/4=4 then
divide 4/28=7
x=7 answer
2007-04-21 09:45:26 · answer #8 · answered by Anonymous · 0⤊ 0⤋
x=1 book
4x=4books
4x+5=33
4x+5-5=33-5
4x=28
4x/4=28/4
x=7
2007-04-21 14:27:47 · answer #9 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
Its not 9.5 because it the 33 dollars INCLUDES the 5 dollar shipping charge so it will be
4x=(33-5)
4x=28
x= 28/4
x= 7
2007-04-21 09:09:08 · answer #10 · answered by frolova88 2 · 1⤊ 1⤋