Is this a function? if so, what is the domain and range of this function?

What is the mean of the data set 125, 141, 213, 155, 281

How would you describe the difference between the graphs of f(x) = 2x2 and g(x) = -2x2?

The price of a new video game is $59.69 before tax. allison bought the game for 12% off. she then paid 9.25% sales tax on the discounted price.part a: how much did allison pay in sales tax? show all work and steps in your solution. round your answer to the nearest cent. part b: what is the total amount that allison paid for the video game? show all work and steps in your solution. round your answer to the nearest cent