If A=x-y+z ,B=2x - 3y-4z and C=4x-5y-6z then find A+B-C

Svetlana's hair is 4 4 centimeters ( cm cm) long. her hair grows 1 . 5 cm 1.5cm per month. svetlana wants her hair to be less than 1 6 cm 16cm long. write an inequality to determine the number of months, m m, svetlana can allow her hair to grow so that it is less than 1 6 cm 16cm long.

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

Write the expression as a single natural logarithm. 2 in a - 4 in y