Which statement is true about the equations –3x + 4y = 12 and x – y = 1? the system of the equations has exactly one solution at (–8, 3). the system of the equations has exactly one solution at (–4, 3). the system of the equations has no solution; the two lines are parallel. the system of the equations has an infinite number of solutions represented by either equation.

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

Joel wants to buy a new tablet computer fram a store having a 20% off sale on all tablets. the tablet he wants has an original cost of $190. he also wants to make sure he has enough money to pay the 5% sales tax. part one joel uses the incorect expression 0.95(190)(0.8) to calculate that the tablet will cost him a total of $144.40. describe his error and write the correct expression part two how much will joel pay for the tablet show your work if you answer this question correctly you will receive a prize of 99 points good luck

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25