The formula I used to solve this problem is 1.99x+2.99(2x)+0.15=40 where x=the # of bottles of soda. 1st Step: 1.99x+2.99(2x)+0.15-0.15=40-0.15 by using the subtraction property of equality. 2nd Step: 1.99x+2.99(2x)=39.85 by using the additive inverse. 3rd Step: 1.99x+5.98x=39.85 by multiplying 2x by 2.99. 4th Step: 7.97x=39.85 by adding like terms. 5th Step: 7.97x/7.97=39.85/7.97 by using the division property of equality. 6th Step: x=5 7th Step: To find how many bags of chips, just multiply 5 by 2 because he bought twice as many bags of chips as bottles of soda. Hope this helps.
2 comments:
Does anybody know how to solve 21b.
Im not sure I have the right formula.
The formula I used to solve this problem is 1.99x+2.99(2x)+0.15=40 where x=the # of bottles of soda.
1st Step: 1.99x+2.99(2x)+0.15-0.15=40-0.15 by using the subtraction property of equality.
2nd Step: 1.99x+2.99(2x)=39.85 by using the additive inverse.
3rd Step: 1.99x+5.98x=39.85 by multiplying 2x by 2.99.
4th Step: 7.97x=39.85 by adding like terms.
5th Step: 7.97x/7.97=39.85/7.97 by using the division property of equality.
6th Step: x=5
7th Step: To find how many bags of chips, just multiply 5 by 2 because he bought twice as many bags of chips as bottles of soda.
Hope this helps.
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