Ihave 2 questions left.

suppose that there are two types of tickets to a show: advance and same-day. advance tickets cost $20 and same-day tickets cost $40 . for one performance, there were 60 tickets sold in all, and the total amount paid for them was $1600 . how many tickets of each type were sold?

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.

What is the order of these fractions from least to greatest 2/3 7/10 5/8 65/100

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.