Thursday

December 18, 2014

December 18, 2014

Posted by **PJ** on Friday, November 7, 2008 at 6:26pm.

a)find a linear function that fits the data.

b) Use the function in (a) to predict the record in 2003 and in 2006.

c) Find the year when the record will be 45.7 sec.

Find a linear function that fits the data.

R(t)=

- ALGEBRA -
**Damon**, Friday, November 7, 2008 at 7:26pmjust like the one about salaries

m = change in seconds per year = (45.9-46.6)/(1990-1920) = -.01 seconds / year

so

R = -.01 *t + 46.6

check when t = 70 (that is 1990)

R = -.01(70) +46.6 = 45.9 check

b) t = 2003 - 1920 = 83

R = -.01(83) + 46.6 = 45.77

c) 45.7 = -.01 t + 46.6

t = 90 years

90 + 1920 = 2010

**Answer this Question**

**Related Questions**

math (am i correct) - in 1920 the record for a certain race was 46.9 sec. In ...

math - in 1920 the record for a certain race was 46.9 sec. In 1990 it was 45.5 ...

algebra - ok i dont get this one in 1920 the record for a certain race was 45.9 ...

Algebra 1 - In 1920 the record for a certain race was 45.1 sec. In 1960, it was ...

Algebra 1 - In 1920 the record for a certain race was 45.1 sec. In 1960, it was ...

math - In 1920, the record for a certain race was 45.5 sec. In 1970, It was 44.5...

algebra - In 1920 the record for a certain race was 45.4 sec. in 1950, it was 41...

Algebra 1 - In 1920 the record for a certain race was 45.1 sec. In 1960, it was ...

math - in 1920 the record for a certain race was 46.4 sec. In 1960 it was 45.6 ...

Math - how do I solve this problem. In 1920 the record for a certain race was ...