What type of function has an inverse that is also a function?

A town uses positive numbers to track increases in population and negative numbers to track decreases in population. The population has decreased by 30 residents over the past 5 years. The same number of residents left each year.

Which statement is true about the parentheses in this expression? [24 - (15 + 2) + 3] - 9

Convert 2/8 into a decimal

4+3b = b-5 How can I solve that

Find three decimals that make the number sentence true ...

Find the volume of the figure: 7ft, 2ft, 1ft, 6ft, 7ft, 6ft, 2ft, 1ft,

What is one of the solutions to the following system? y-3=x x^2-6x+13=y A. (-5, 2) B. (-2, 1) C. (2, 5) D. (8, 5)

Casey was twice as old as his sister 3 years ago. Now he is 5 years older than his sister. How old is Casey?

A pilot flies 441 kilometers in 31.5 minutes. what is the speed of the air plane?

What is the sum 3/4+5/16 A) 14 16 B) 17 16 C) 53 16 D) 7 16 those are fractions btw