Please help me with #2

Worth 15 points handsome jack is buying a pony made of diamonds. the price of the pony is p dollars, and jack also has to pay a 25% diamond pony tax. which of the following expressions could represent how much jack pays in total for the pony? a= p = 1/4 b= p+0.25p c=(p + 1/4)p d=5/4p 0.25p choose 2 answers

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?