anonymous
  • anonymous
PLEASE HELP ME WITH THIS PROBLEM!!!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Some scientists believe that the average surface temperature of the world has been rising steadily. The average surface temperature can be modeled by T = 0.02t + 15.0 where T is the temperature in °C and t is years since 1950. What do the slope and T-intercept represent? (a) The slope represents the increase in the average surface temperature in °C per year, and the T-intercept is the average surface temperature in 1950, or 15°C. (b) The slope represents the decrease in the average surface temperature in °C per year, and the T-intercept is the average surface temperature in 1950, or 15°C. (c) The slope represents the average surface temperature in °C per year, and the T-intercept is the increase in surface temperature in 1950, or 15°C. (d) The slope represents the average surface temperature in °C per year, and the T-intercept is the decrease in surface temperature in 1950, or 15°C. (e) The slope represents the change in the average surface temperature in °C per year, and the T-intercept is the predicted surface temperature in year 2015.
anonymous
  • anonymous
whats the answer?
anonymous
  • anonymous
idk im tryin to figure it out

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anonymous
  • anonymous
help please?
campbell_st
  • campbell_st
ok... if I write the equation y = 0.2x + 15 can you identify the slope and y-intercept..?
anonymous
  • anonymous
|dw:1348708493248:dw|
anonymous
  • anonymous
(b) Use the equation to predict the average global surface temperature in 2070. (Round your answer to the nearest degree.)
anonymous
  • anonymous
Try to do the math yourself. For the first question, break it down. What does the T-intercept represent with the given problem?
anonymous
  • anonymous
0.2 is the slope (0,15) is the y-int
campbell_st
  • campbell_st
the graph looks like |dw:1348708353492:dw|
campbell_st
  • campbell_st
so in your line you have T = 0.02t + 15 so whats the slope and T intercept..?
campbell_st
  • campbell_st
so looking at the line... is it increasing or decreasing.
anonymous
  • anonymous
increasing
anonymous
  • anonymous
Here is a better graph picture for you. Sorry I didn't help earlier.
1 Attachment
campbell_st
  • campbell_st
the slope is increasing...
campbell_st
  • campbell_st
and T is the initial temperature when t = 0
anonymous
  • anonymous
I know the answer but I would like you to answer it yourself.
anonymous
  • anonymous
Should i give a hint or not?
anonymous
  • anonymous
i know the answer is A
anonymous
  • anonymous
yes you are right
anonymous
  • anonymous
(b) Use the equation to predict the average global surface temperature in 2070. (Round your answer to the nearest degree.)

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