last week, colette worked 40 hours as a receptionist and 10 hours as a copywriter. if her income was $700 last week, and she was paid $20 per hour as a copywriter, how much was she paid, in dollars per hour?

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Question 1 of 10 2 points different groups of 50 graduates of an engineering school were asked the starting annual salary for their first engineering job after graduation, and the sampling variability was low. if the average salary of one of the groups was $65,000, which of these is least likely to be the average salary of another of the groups? o a. $64,000 o b. $65,000 o c. $67,000 o d. $54,000