Five less than half number is 20. What is the number? 68 less than 5 times a number is equal to the number. Find the number?

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?

The rectangle shown has a perimeter of 108 cm and the given area. its length is 6 more than five times its width. write and solve a system of equations to find the dimensions of the rectangle.

The graph of f(x) = |x| is transformed to g(x) = |x + 11| - 7. on which interval is the function decreasing?