Sally is buying paper clips and staples for the office. a box of paper clips costs (x) $2, and a box of staples (y) costs $4. she is using only the petty cash account's balance of $28 to make the purchase. which inequality models this situation?
a) 2x + 4y ≤ 28
b) 4x + 2y ≤ 28
c) 4x + 2y < 28
d) 2x + 4y > 28

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?

What is the scale factor of two similar pyramids with volumes of 64 cubic feet and 8 cubic feet

Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm2. what is the area of the second triangle?