Justin's dad claims that taking piano lessons will help Justin get into an Ivy League school one day. Justin
decides to try to prove his dad wrong by interviewing a randomly selected sample of college educated
adults. Justin asks them whether they attended an Ivy League school and also whether they took piano
lessons as a child.
The relative frequency table below shows his results. Justin interviewed 9 randomly selected adults who
attended an Ivy League school but did not take piano lessons.
How many adults in Justin's survey took piano lessons?
(Round to the nearest whole number.)
Does the table show evidence of an association between not taking piano lessons and not attending an
Ivy League school?
Choose all answers that apply:

answer: 177/8

step-by-step explanation:

2 equivalent expressions to represent the area of a rectangle and the top is n-3 and the side is 2

area of the rectangle = length * width

given length = n - 3

width = 2

replace it in the area

so area of the rectangle = (n-3) *2

= 2(n-3)

one of the expression is 2(n-3)

to get another expression we distribute 2 inside the parenthesis

2(n-3) is 2n - 6

so another expression is 2n - 6

two equivalent expression are

2(n - 3)   , 2n - 6

the answer is $4.45. i started by figuring out the cost of the plates and napkins. the easiest way to figure this cost out is through the tax. we know the way they found the tax is by multiplying the cost of non-food items by the tax rate (5% or 0.5). so, all we have to do to find the cost before tax is set up an equation and work this formula backwards. the equation is 0.19=0.05x where x is the cost of the plates and napkins. now all you do is divide both sides by 0.05 to come up with 3.8=x. now that we know the cost of the plates and napkins is $3.80, all we have to do is subtract this cost from the total cost of $8.25 giving us the cost of the watermelon which is $4.45.