Enter the phrase as an algebraic expression

p divided by 7

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

The ratio of the height of two similar cylinders is 4 to 3 what is the ratio of their volumes

Andy has $310 in his account. each week, w, he withdraws $30 for his expenses. which expression could be used if he wanted to find out how much money he had left after 8 weeks?