Ac = 19, ab= x +9 and bc= x + 12 find x

You have $600,000 saved for retirement. your account earns 5.5% interest. how much, to the nearest dollar, will you be able to pull out each month, if you want to be able to take withdrawals for 20 years?

Which ordered pair is a solution of the equation? 2x+3y=10

X^2/100+y^2/25=1 the length of the major axis is: a)5 b)10 c)20