Which equation shows the quadratic formula used correctly to solve 5x2 + 3x – 4= 0 for x?
-3= v(3)? -4()
x=
2(5)
31 v(3)+4()
2(5)
3+ (3)2-4(
2(5)
-3+ |(3)2 +4()
2(5)

The solution set for 5v2 – 125 = 0 is

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.

Write the pair of fractions as a pair of fractions with a common denominator