What is 1+2+3...+100 First one correct gets brainliest and 20 pts!!!

Can you simplify 4/7? 24 points will be awarded!

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.

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?