Which expression can be used to find the value of the expression below? 6.1 - 5.4 - (-7.7) A. 6.1 - 5.4 - 7.7
B. 6.1 + 5.4 + ( — 7.7 )
C. 6.1 + 7.7 - 5.4
D. 6.1 + 7.7 + 5.4
PLEASE HURRY IM DOING A TEST

Malia is observing the velocity of a cyclist at different times. after two hours, the velocity of the cyclist is 15 km/h. after five hours, the velocity of the cyclist is 12 km/h. part a: write an equation in two variables in the standard form that can be used to describe the velocity of the cyclist at different times. show your work and define the variables used. (5 points) part b: how can you graph the equations obtained in part a for the first 12 hours? (5 points) if you can try and make this as little confusing as you can

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?

This summer the number of tourists in salem increased 4.5% from last years total of 426000. how many more tourists came to salem this summer