For online courses, like those in ecore, there is a positive correlation between the amount of time spent in the course and the course grade. the following table presents, for a sample of students in an ecore class, the average number of minutes spent in the course each week (x) and the overall course grade (y). minutes 345.6 360.1 19.8 135.9 217.3 71.1 grade 83.6 95 31.5 73.7 87.1 6.3 compute the least-squares regression line, rounding b0 and b1 to two decimal places. use the least-squares regression line to predict the course grade of a student in the course who spent an average of 103 minutes in the course each week. round your answer to one decimal place. write only a number as your answer.

An airplane consumes fuel at a constant rate while flying through clear skies, and it consumes fuel at a rate of 64 gallons per minute while flying through rain clouds. let c represent the number of minutes the plane can fly through clear skies and r represent the number of minutes the plane can fly through rain clouds without consuming all of its fuel. 56c+64r < 900056c+64r< 9000 according to the inequality, at what rate does the airplane consume fuel while flying through clear skies, and how much fuel does it have before takeoff? the airplane consumes fuel at a rate of gallons per minute while flying through clear skies, and it has gallons of fuel before takeoff. does the airplane have enough fuel to fly for 60 minutes through clear skies and 90 minutes through rain clouds?

Jabari is power washing houses for a summer job. for every job, he charges an initial fee plus $30 for each hour of work. his total fee for a 4 -hour job, for instance, is $170 . jabari's total fee, f, for a single job is a function of the number, t, of hours it takes him to complete the job. write the function's formula.

Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.