Find from first principle ,the diffential coefficient of sin(2x+5)

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 is the total area of the figure?

Using elimination, what is -4x+2y=-12 4x+8y=-24