Preeta bought 4 pens and a $1.50 newspaper, while her husband Levi bought 2 pens and a $4.90 magazine. To their surprise, the cost of both of their purchases was the same. I'm trying to figure out what 1 pen is! Please help me ASAP!

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.

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36

Can someone me with these two circle theorem questions asap?