Mrs. Collette and Mrs. Johnson are making a new background pattern for the bulletin board for Valentine’s Day. The pattern they are using to make the background is a combined circle with a 12in diameter and square with an area of 144in. The paper for the pattern costs $1.25 per square foot. How much will they have to pay to have enough patterns for a class of 30?

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step-by-step explanation:

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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