Kath starts with a number. she adds 3 to her number then double the result. finally, she subtracts 7. if she ended with 9, what number did she start with?

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.

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

What is the slope of the line (-7,2) (4,6)