# Need algebra help for Solving systems of equations

Dec 13th, 2015
KateS
Category:
Algebra
Price: \$10 USD

Question description

1. Complete the table below to solve the equation 2.5x – 10.5 = 64(0.5x).

2. A newspaper started an online version of its paper 14 years ago. In a recent presentation to stockholders, the lead marketing executive states that the revenues for online ads have more than doubled that of the revenues for printed ads since starting the online version of the paper. Use the graph below to justify the lead executive’s statement and to determine the approximate year that the two ad revenues were equal.

3. Two ocean beaches are being affected by erosion. The table shows the width, in feet, of each beach at high tide measured where 1995 is represented by year 0.

A Describe the patterns shown by the erosion data measurements shown for each of the beaches in the table

B Between which years will the beaches have approximately the same width?

C Assuming these rates remain constant, what can you do to get a better approximation of when the two beaches will have the same width?

4. A wooded area in a state park has a mixture of different types of trees. There are 800 pine trees and 50 oak trees. The number of pine trees is decreasing at a rate of 5% per year. The number of oak trees is increasing at a rate of 15% per year. If these trends continue:

A Write two functions to model this situation, and graph those two functions on the same coordinate grid.

B During what year in the future will the park have approximately the same number of pine and oak trees?

C How many of each type of tree will there be at that time?

screen_shot_2015_12_13_at_5.14.51_pm.png
screen_shot_2015_12_13_at_5.16.40_pm.png
screen_shot_2015_12_13_at_5.17.22_pm.png

(Top Tutor) Daniel C.
(997)
School: UCLA

Studypool has helped 1,244,100 students

## Review from our student for this Answer

SoccerBoss
Dec 13th, 2015
"AMAZING as always!"

1827 tutors are online

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors