Question 4(1 point) A company finds that if it charges a dollars for a cell phone, it can expect to sell 1,000 – 2x phones. The company uses the function - defined by r(x) = 2 · (1,000 – 22) to model the expected revenue, in dollars, from selling cell phones at dollars each. Use graphing technology to graph the function r. What do the z-intercepts mean in this situation?

Do social recommendations increase ad effectiveness? a study of online video viewers compared viewers who arrived at an advertising video for a particular brand by following a social media recommendation link to viewers who arrived at the same video by web browsing. data were collected on whether the viewer could correctly recall the brand being advertised after seeing the video. the results are given below.correctly recalled the brandarrival 409153browsing20484b. conduct the hypothesis test, using the 0.025 level of significance.what is the value of the test statistic? χ2stat=what is the p-value? p-value=is this value significant atα=0.025?

The function show two sisters' savings account and the rate at which they plan to deposit money

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.