The steps to derive the quadratic formula are shown below:
step 1 ax? + bx + c = 0
step 2 ax? + bx = -
step 3 x2 + x=-
step 7 (x+ - + pomac -- vozac
step 8 x= -b
/b2 - 4ac
2a +
2a
step 9 x= -btvb2-4ac
2a
which of the following is the first incorrect step?

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

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period.value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?