The work of a student to find the dimensions of a rectangle of area 6 + 8x and width 2 is shown below:

step 1: 6 + 8x
step 2: 2(4) + 2(6x)
step 3: 2(4 + 6x)
step 4: dimensions of the rectangle are 2 and 4 + 6x

in which step did the student first make an error and what is the correct step?
step 3; 2 + (4 + 6x)
step 3; 2 + (4 ⋅ 6x)
step 2; 2(4) + 2(4x)
step 2; 2(3) + 2(4x)

Suppose there is a simple index of three stocks, stock abc, stock xyz, and stock qrs. stock abc opens on day 1 with 4000 shares at $3.15 per share. stock xyz opens on day 1 with 5000 shares at $4.30 per share. stock qrs opens on day 1 with 6000 shares at $4.60 per share. the price of stock abc on day 8 begins at $3.50. the price of stock xyz on day 8 begins at $3.90. stock qrs opens on day 8 with a price of $4.50 per share. assume that each stock has the same number of shares that it opened with on day 1. what is the rate of change of this simple index over 1 week?

You call the pizza store and find out that eachpizza has 12 slices. you expect 16 people tocome, and you estimate each person will eat 3slices. how many pizzas should you order

The line containing the midpoints of the legs of right triangle abc where a(-5,5), b(1, 1), and c(3, 4) are the vertices.