The Zonda Information and Telephone Company (ZI&T) calculate a customer's total monthly cell phone charge using the formula, C= (b+rm)(1+t). Where C os the total cell phone charge, b is a basic monthly fee, r is the rate per minute, m is the number of minutes used that month, and t is the tax rate. Solve for b, the basic monthly fee.

d is correct

step-by-step explanation:

312312

step-by-step explanation:

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)