Mario took part in a race with charter boats. the whole race was 30km. sara gave him 500 leke for every full kilometer. mario gave sares 200 leke for every full kilometer he could not sail. the change was granted to the charity. marius gave 11500 leke for the charity. a) mario made a mile. make an equation about k and choose it. b) find the smallest number of miles that mario has to fill in so that he can contribute to the charity.

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33

step-by-step explanation:

is their an equation anywhere i can take a   look at it and see if i am right.