When a family with two adults and three children bought tickets for an amusement park they paid total of 56.50. the next family in line, with four children and one adult, paid 49.50. find the adult and child ticket prices by writing and solving a system of equations.

How can we find the measure of an exterior angle if we know the measurement of an interior angle

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.

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?