Stephanie spent half of her weekly allowance playing arcade games. To earn
more money her parents let her clean the
oven for $7. What is her weekly
allowance if she ended with $12?
Pls give me an equation and your work

Carter drank 15.75 gallons of water in 4 weeks. he drank the same amount of water each day.a. estimate how many gallons he drank in one day.b. estimate how many gallons he drank in one week.c. about how many days altogether will it take him to drink 20 gallons?

1. the wheeling bridge in west virginia is about 307 meters long. if you walk with a stride of about meter, about how many steps would it take you to cross this suspension bridge?

Solve 2x+y=3 x+y=5 in substitution method