Solve 2x-y-2=0 and 4x+3y-24=0 and y+4=0

What is the value of r of the geometric series?

What is the value of x in the following equation? -3x-2=2x+8

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!