To eliminate the y-terms and solve for x in the fewest steps, by which constants should the equations be multiplied by before adding the equations together?
First Equation:
5x - 4y = 28
Second equation: 3x - 9y = 30
O The first equation should be multiplied by 3 and the second equation by 5.
O. The first equation should be multiplied by 3 and the second equation by -5.
© The first equation should be multiplied by 9 and the second equation by 4.
O The first equation should be multiplied by 9 and the second equation by -4.

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

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

Drag each expression to the correct location on the solution. not all expressions will be used. consider the polynomial 8x + 2x2 - 20x - 5. factor by grouping to write the polynomial in factored form.