4x-3y=10 x+2y=-14 solve the equation using the linear combination method

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?

How can you find the mean absolute deviation (mad) for this set of data?

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%