Tamara has a cell phone plan that charges $0.07 per minute plus a monthly fee of $19.00. she budgets $29.50 per month for total cell phone expenses without taxes. write an equation to determine the maximum number of minutes tamara could use her phone each month in order to stay within her budget?

True or false look at the picture pls : /

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%

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?