Andy has a number of friends who like dressing as zombies for halloween. two years ago, four of his friends dressed as zombies. last year, that number increased by fifty percent. this year, the number increased by one third over last year. how many of andy's friends are dressing as zombies this year?

8

Step-by-step explanation:

50 percent of 4 is 2

4+2=6

1/3 of 6 is 2

6+2=8

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step-by-step explanation:

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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