afitzgerald
18.02.2021 •
Mathematics
Louise buys 1 pack of pencils and 1 box of crayons for her son for $3.39. Elaine buys 7 packs of pencils and 8 boxes of crayons for her students for $25.88.
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Ответ:
Step-by-step explanation:
p+c=3.39, p=3.39-c
7p+8c=25.88, using p=3.39-c in this equation gives you
7(3.39-c)+8c=25.88
23.73-7c+8c=25.88
23.73+c=25.88
c=2.15, since p=3.39-c
p=3.39-2.15
p=1.24
So pencils cost $1.24 and crayons cost $2.15
Ответ:
Yes, the membership is worth it.
Step-by-step explanation:
Per workout : $10× 24 days = $240
Per workout with th membership: $3 × 24 days = $72+ $140 = $212