4. Simplify the expression.
(4n4 - 8n + 4) - (8n2 + 4n4 + 1)
a) -8n2 - 8n +3
b) -7n2.8n + 3
c) -6n2 - 8n + 3
d) -7n2.4n +3

The graph below shows the line of best fit for data collected on the number of cell phones and cell phone cases sold at a local electronics store on twelve different days. number of cell phone cases sold 50 * 0 5 10 15 20 25 30 35 40 45 number of cell phones sold which of the following is the equation for the line of best fit? a. y = 0.8x b. y = 0.2x c. y=0.5x d. y = 0.25x