Rafael le dice a Pablo: Si al doble de mi edad le sumamos siete veces la tuya obtenemos 157 años. A lo cual Pablo le responde si a nueve veces mi edad le quitamos cinco veces la tuya solo son 58 años. ¿Qué edad tienen Rafael y Pablo?

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

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?

Ill mark the brainliest if you me with the these three questions 7,8,9