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Mathematics 16 Online
OpenStudy (anonymous):

HELP PLEASE!!!

OpenStudy (anonymous):

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. Year number Western Beach width (in feet) Dunes Beach width (in feet) 0 100 20 5 90 45 10 80 70 11 78 75 12 76 80 15 70 95 Describe the patterns shown by the erosion data measurements shown for each of the beaches in the table. Between which years will the beaches have approximately the same width? Assuming these rates remain constant, what can you do to get a better approximation of when the two beaches will have the same width?

OpenStudy (triciaal):

as the years go by western beach widths decrease while dunes beach width increases

OpenStudy (anonymous):

Which one is exponential

OpenStudy (anonymous):

@across

OpenStudy (triciaal):

western beach -2 ft while dunes beach + 5ft per year

OpenStudy (anonymous):

its not decreasing by negative 2 or increasing by 5

OpenStudy (triciaal):

decreasing by negative 2 this is a double negative

OpenStudy (anonymous):

decreasing by 2 sorry

OpenStudy (triciaal):

plot the graph and see where they meet

OpenStudy (anonymous):

Thats not what i need, i need to know which one is linear and which one is exponential

OpenStudy (triciaal):

linear means change by a constant amount and you have a line y = mx + b format exponential change progressively more

OpenStudy (anonymous):

so the dunes beach is linear

OpenStudy (triciaal):

the slope is constant plot the graphs i still got -2 for western and + 5 for dunes both linear

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