total monthly income, $lof a salesman who sells books consists of a basic salary of $400 and
a variable amount, k, which depends on the number of books he sells. for each book he sells,
he receives $5.
(1) ir the salesman sells 50 books in a particular month, find his total income for that month.

An architect is designing a water fountain for a park she uses the given function to model the water jet flowing from the fountain nozzles where h(x) gives the height of the water jugs in feet x feet from the starting point h(x)=-1/20x+x+15

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much