(50) POINTS AND 5 STAR AND THANKS AND BRIAN-LIST Emma saves 28 cents of every dollar that she earns.
Emma earned $75 last week.
How much money did Emma save last week?

A $21
B $28
C $47
D $75

A generator can run for 11 hours on 3 gallons of gasoline. If the gasoline costs $3 per gallon, which is closest to the cost per hour to run the generator?

A $9.00
B $33.00
C $0.82
D $1.22

Trent wants to buy 2 packs of trading cards for 3 dollars each. the trading card packs that trent normally buys tend to come in packs of 6, 10, 12, or 15 cards. after selecting 2 packs, trent found that the first pack of cards cost 25 cents per card, and the second pack cost 30 cents per card. trent uses this information to write the equations below in order to compare c, the number of cards in each pack.

Can someone me with this problem i don't understand i need

Four quarts of a latex enamel paint will cover about 200 square feet of wall surface. how many quarts are needed to cover 98 square feet of kitchen wall and 52 square feet of bathroom wall