Which function has an inverse that ia also a function

Determine if the sequence is arithmetic. - 9, - 109, - 209, - 309

The function for the cost of materials to make a hat is f (x) = one half x + 1, where x is the number of hats. The function for the selling price of those hats is g (f (x)), where g (x) = x + 2. Find the selling price of 10 hats.

Larry took out an 80/20 mortgage on a $225,000 home. What is the amount financed under the first mortgage? A.$45,000 B.$180,000 C.$164,000 D.$225,000

The equation is an example of variation. What is the constant of variation?

if the principal is $475 and the interest rate is 5 percent, what is the simple interest earned in one year?

Perdo bought 8 tickets to a basketball game. He paid a total of 208. Write an equation to determine whether each ticket cost 26 or 28.

Jackson is starting an exercise program. The first day he will spend 30 minutes on a treadmill. He will increase his time on the treadmill by 2 minutes each day. Write an equation for, the time, in minutes, on the treadmill on day d.

The graph represents the feasible region for the system: y 30 Minimize the objective function P = 20x + 16y.

A square with sides of 15 cm is enlarged in a ratio 3:4. What is the area of the resulting square?

Vertical distance to - 3,8