# i need help with these please

Anonymous
account_balance_wallet \$10

Question description

(1)Geologists date geologic events by examining sedimentary layers in the ocean floors. For instance, they can tell when an ancient volcano erupted by noting where in the sedimentary layers its ash was deposited. This is possible because the rate of sedimentation is assumed to be largely constant over geologic eras, so the depth of the sedimentation is modeled by a linear function of time. To examine sedimentary strata, core samples (often many meters long) are drilled from the ocean floor, then brought to the laboratory for study. Special features in the layers, including the chemical composition of the deposits, can indicate climate change or other geologic events. It is estimated that the rate of sedimentation in a lake is 0.26 cm per year. The depth beneath the lake bottom at which a layer of sediment lies is a function of the time elapsed since it was deposited.

(a) Find a linear function that models the depth of sediment as a function of time elapsed.

(b) To what depth must we drill to reach sediment that was deposited 300 years ago?

---------------------------------------------------------

(2)The amount of trash in a county landfill is modeled by the function

T(x) = 34,800 + 6x

where x is the number of days since January 1, 1996, and T(x) is measured in thousands of tons.

(c) At what rate is the landfill receiving trash?

School: UCLA

Attache...

flag Report DMCA
Review

Anonymous
The best tutor out there!!!!

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