The county fair charges $1.25 per ticket for rides. jermaine bought 20 tickets for the rides and spent a total of $35.00 at the fair. jermaine spent his money only on ride tickets and fair admission. the price of the fair admission is the same for everyone else. use y to represent the total cost and x to represent the number of ride tickets.
define your variables.
write a linear equation that can be used to determine the cost for anyone who only pays for ride tickets and fair admission. explain.

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Arandom sample of 15 observations is used to estimate the population mean. the sample mean and the standard deviation are calculated as 172 and 63, respectively. assume that the population is normally distributed. a. with 99 confidence, what is the margin of error for the estimation of the population mean? b. construct the 99% confidence interval for the population mean. c. construct the 95% confidence interval for the population mean. d. construct the 83% confidence interval for the population mean. hint: you need to use excel function =t.inv.2t to find the value of t for the interval calculation.

|4x-3|-5=4 and |2x+3|+8=3, what are the solutions to the problems