Arational function, a value is from the domain if it would create a 0 in the function's denominator.

Cody worked 42.5 hours per week in july. this is 12.25 hours more per week than he worked in june.how many hours did cody work per week in june?

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?