Me pls i need to pass this test or i fail 8th grade

solve the following system of equations using substitution or elimination.
-2x + 4y =48 x + 4y =24
a. (-8, 8)

b. (2, 13)

c. (8, 4)

d. (8, -8)

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b?

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.

Tim has obtained a 3/27 balloon mortgage. after the initial period, he decided to refinance the balloon payment with a new 30-year mortgage. how many years will he be paying for his mortgage in total?