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$32.23

Step-by-step explanation:

4($9.99) = $39.96

                 $39.96 - 39.96(0.20)

                 $39.96 - 7.992      =  $31.97 rounded to the nearest penny

                                                    $31.97 + 31.97(0.0675)

                                                    $31.07 + 2.16             = $32.23

the expected value of the random variable : 0, 1 and 2

step-by-step explanation:

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?