What is the result of adding -2.9a+6.8 and 4.4a-7.3

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation:

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

there were a lot of them but the first one to pop up on a google search was bts

the answer is: -22 also a

hope i

-lavira: )