Which of the following is equal to |27 - 10| + 19 - 4x] ? O'-27-1 0 27-1 0 27+1 067-1 0 67+19stion 13 of 23 When a certain company sells n items, its total sales revenue, in dollars, is modeled by the function R defined by R(n) = -(n - 30)2 + 1,200. What is the average rate of change of the total sales revenue when the number of items sold increases from 20 to 26 ? $85 per item O $2,284 per item $14 per item O $42 per item O $1,142 per item=8(x) ( x ) / = 1 The figure above shows the graphs of the quadratic function f and the linear function g. What are all the x-intercepts of the graph of y = f(x) - g (x) ? OI OI and 3 1 and 5 O -2 and 3 O -2, 1, 3, and 5If f(x) = 2cos (3x), then (75) - O 0 O - N S O 1 O V 3 O 3 V2If f(x) = x-x, then f(x+2) -f(x) = 2 O 1 4x 2 x+1 4x + 2 Ox- x