In 1960, the world record for the men's mile was 3.91 minutes. In 1980, the record time was 3.81 minutes.

a. Write a linear model that represents the world record (in minutes) for the men's mile as a function of the number of years, t, since 1960.

y= ()

b. Use the model to estimate the record time in 2000 and predict the record time in 2020.

() minutes

() minutes

  1. 👍 4
  2. 👎 4
  3. 👁 1,606
  1. in 20 years, the time decreased by 0.1 minutes.
    So, the slope of the line is -0.1/20 = -0.005
    So, since y(0) = 3.91,
    y = 3.91 - 0.005x

    Now use that for part (b)

    1. 👍 4
    2. 👎 14
  2. y=-0.005t+3.91

    1. 👍 3
    2. 👎 0
  3. that does not work in big ideas math algebra

    1. 👍 3
    2. 👎 0
  4. answers 2
    Calculating Percent Change and Final Amounts?

    1. 👍 1
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A coin rests on a record 0.15 m from its center. The record turns on a turntable that rotates at variable speed. The coefficient of static friction between the coin and the record is 0.30. What is the maximum coin speed at which

  2. Accounting

    Classify the following adjusting entries as involving prepaid expenses (PE), unearned revenues (UR), accrued expenses (AE), or accrued revenues (AR). a. To record revenue earned that was previously received as cash in advance. b.

  3. Physics

    A record player rotates a record at 45 revolutions per minute. When the record player is switched off, it makes 5 complete turns at a constant angular acceleration before coming to rest. What was the magnitude of the angular

  4. Algebra

    Use the coordinates of the two points that show male life expectancies for 1980 and 2000 to write a linear function that models life expectancy. E (x), for men born in this community x years after 1960 Coordinates are 1960-66.8

  1. physics

    The froghopper, Philaenus spumarius, holds the world record for insect jumps. When leaping at an angle of 58.0 degrees above the horizontal, some of the tiny critters have reached a maximum height of 58.7 cm above the level

  2. physics

    The current indoor world record time in the 200-m race is 19.92 s, held by Frank Fredericks of Namibia (1996), while the indoor record time in the one-mile race is 228.5 s, held by Hicham El Guerrouj of Morroco (1997). (a) Find

  3. accounting

    in the blank space beside each adjustin entry, enter the letter of the explanation A through F that most closely describes the entry. A. to record this periods depreciation expense B. to record accrued salaries expense. C. to

  4. Physics

    On August 20, 1989, in Cologne, West Germany, Said Aouita of Morocco also established a world record when he ran the 3000 meter run in 7.00 minutes 29.45 seconds. What was his average speed (in m/s) for the race? Do I divide 3000

  1. Math

    The record for the Boston Marathon's wheelchair division is one hour 18 minutes and 27 seconds A) The Boston Marathon is 26.2 miles long what was the average speed of the record winner of the wheelchair division round to the

  2. algebra

    In 1920 the record for a certain race was 46.5 seconds. in 1980 it was 45.3 seconds let R(t) = the record in the race and t=the number of years since 1920 R(t) = 46.5 - t*0.02 what is the predicted record in 2003? 44.84 what is

  3. accounting

    Classify the following adjusting entries as involving prepaid expenses(PE), unearned revenues)UR), accrued expenses(AE), or accrued revenues(AR). a. ____ to record revenue earned that was previouslu received as cash advance. b.___

  4. Math

    Tanya Streeter holds the world record for freediving in the ocean. She dove 525 feet in 3 1/2 minutes. How many feet per minute did she dive?

You can view more similar questions or ask a new question.