Parker is working two summer jobs, making $11 per hour lifeguarding and $22 per hour tutoring. Last week Parker worked a total of 16 hours and
earned a total of $242. Determine the number of hours Parker worked
lifeguarding last week and the number of hours he worked tutoring last week.

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics