The first three steps for solving the quadratic equation 8x^2+80x=-5 by completing the square are shown. fill in the missing number in the last step
8x^2+80x=-5
8(x^2+10x)=-5
8(x^2+10x+25)=-5+ ?
a)-200
b)-25
c)25
d)200

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

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Susie wants to take her friend out for lunch. she wants to spend $9.75 each person. how much will she spend in all.