Can you please help me with this question?​

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?

Solve the system of equations y= 3/2 - 1, -x+ y =-3

What is the explicit formula for this sequence? -7, -4, -1, 2, a.) an = 8 + (b - 1)3 b.) an = -7 + (n - 1)3 c.) an = 3 + (n -1) (-7) d.) an = -7 + (n - )