In the expression 2(10x) + 15y, x represents the number of hours Nina works in a week at a clothing store and y represents the number of hours she works in a week as a babysitter. The expression shows how much money Nina has earned this month. Which statement is true?

my guess is

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