A prism has an equillateral triangular base with a perimeter of 12cm. if the length of the prism is 24cm, determine the total surface area of the prism.
(hint, what is the area of the triangle)

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.

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?

Write 5 in the form of a/b using integers to show it as a rational number