3 Emma, Steve, Maria, and George are comparing the solution of a math assignment problem below.
3
21
12 + 21
Select the student who correctly subtracted the rational expressions.
Emma:
Steve:
3
( - 1)(+3)
1) (1 + 3)
1(r + 3) + 3
1(+ 3) - 3
(1 - 1)(1 + 3)
(1 - 1) (3 + 3)
I + 6
(1 - 1)(+ + 3)
(1 - 1)(+ 3)
5
1
1
11
1
II
=
Maria:
George:
3
(1 - 1)(1 + 3)
1
1-3
2 + 3
1
1
1
11
-
-2
I + 3
IL
-12 2012
A.
Emma
B.
Steve

Adaylily farm sells a portion of their daylilies and allows a portion to grow and divide. the recursive formula an=1.5(an-1)-100 represents the number of daylilies, a, after n years. after the fifth year, the farmers estimate they have 2225 daylilies. how many daylilies were on the farm after the first year?

Aplane is taking off from bangladesh headed to new york city. at the same time, a plane from new york city is headed to bangladesh is also taking off. the plane bound to new york city is traveling at 600 mph, while the plane traveling to bangladesh is traveling at 400 mph. how far from new york city will the two planes meet if the distance between new york city and bangladesh is 8,000 miles?

Needmax recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.