PLEASE HELP MEE pleaseee​

If you roll two fair dice (one black die and one white die), in how many ways can you obtain a 4 on at least one die?

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

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.