9. The sales tax in one state is 5%. Write a function rule for finding the total cost of
an item with selling price x. Then find the total cost of a CD player with a selling
price of $110.
A f(x) = 1.05x; $115.50
B f(x) = x - 5; $108.95
C f(x) = 0.05x; $5.50
D f(x) = 5 + x;$111.05

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?

(x-5)1/2+5=2 what is a possible solution?

12 3 4 5 6 7 8 9 10time remaining01: 24: 54which graph represents this system? y=1/2x + 3 y= 3/2x -1