The volume of a sphere is 36π in³. what is the radius of the sphere?

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

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.