1. Divide as indicated and simplify:
[A]
x3
3
x3
3
[B]
2. Subtract as indicated and simplify:
[A]
x 1
x 1
x 1
x x2
[B]
11
x 1
x3
x
[C]
11
2x 1
[B]
[B]
x3
2
2
x 1 x 1
4
7
x 2 x 3
[B]
1
5
[B]
11x 2
( x 2)( x 3)
[D]
x2
x
[D]
[C]
1
4
[D]
x 2 x 3
3
x 4 2
4
[
Curve Fitting with Excel
Basic Curve Fitting
1. Data There must be two columns of data. One column of x (input, predictor,
independent) data, and one column of y (output, response, dependent) data. The
size of both data sets must be the same.
2. Scatter P
MATH 1130 (Math for Business and Economics) Fall 2014
Instructor: Dr. Rekha Bai
Phone: (617) 373-5640
E-mail: r.bai@neu.edu
Office: 541 Lake Hall
Office Hours: Monday, Wednesday, Thursday 12 1pm, and other time by appointment
Lectures:
9:15 am - 10:20 am
MATH1130
Fall 2014 Midterm Review
1. The population of a certain island (in thousands) is given in the table.
Year
Population
(thousand)
1990
1992
1994
1996
1998
2000
2002
30.8
31.5
32.3
33
33.6
34.3
34.9
a) Let x=number of years since 1990, label the axe