Question 1
Solve the equation.
8(4- x) = 7x + 2

Really need on these. i have no idea what to do

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%

Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.