4) What is the percent of change? Round to the nearest whole number if necessary $99 to $74 a. 34% increase b. 34% decrease c. 25% decrease d. 25% increase 5) A couch costs $1725 and had a 15% mark-up. Find the total cost after mark​

3/6   and 9/18

step-by-step explanation:

the answer is 375 miles

step-by-step explanation:

your answer is -9

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