Write -1/19, 7/4, -4/7 from least to greatest

Write the sentence as an equation. 6 fewer than the quantity 140 times j equals 104

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.

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?