Aa teacher had 56 red pens. if the ratio of red pens to blue pens she owned was 7: 5 how many pens did she have total

How many days was the temperature above 90 degrees?

Plz help plz give me the answer

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.