Antar makes a total of $40.75 selling comic books and packages
of baseball cards. If he sells 13
books for $2.50 each, how many
packages of baseball cards did he
sell at $0.75 each?

On a piece of paper, graph y< x+1. then determine which answer matches the graph you drew.

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%