PLEASE READ IT ALL Steve was asked to subtract (4x2 - 3x + 4) - (x2 + 7x - 2). His work is shown below.

(4x2 - 3x + 4) - (x2 + 7x - 2)

= 4x2 - 3x + 4 - x2 + 7x - 2

= 3x2 + 4x + 2

Part A:Explain what mistake Steve made while doing the problem.
Part B: What is the correct answer to the subtraction problem Steve was given?

Given: f(x) = 2x + 5 and g(x) = x2 and h(x) = -2x h(g(f( = x2+ vx+ x + y

The average hourly earnings for a construction worker is projected to be $24.50 in 2012. jason wants to join the construction work force after he graduates in 2012. his friend tells him that average hourly earnings for construction workers will rise by 2% from 2009 to 2012. based on the data below, assuming that the projected hourly earnings are correct, is jason’s friend’s statement accurate? construction industry - average hourly earnings, 2000-2009 a. his friend’s statement is accurate. the average hourly earnings will increase by 2%. b. his friend’s statement is not accurate. the percent increase will be more than 2% c. his friend’s statement is not accurate. the percent increase will be less than 2% d. his friend’s statement is not accurate. the average hourly earnings will decrease

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab