We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
-5
264
1
avatar+41 

For the period 1985 - 2001, the average salary y (in thousands of dollars) per season of a Major League Baseball player can be modeled by y = 7x^2 - 4x + 392 where x is the number of years since 1985.

 

a. Write and solve an equation to find the year when the average salary was $1,904,000.

 

b. Use a graph to check your solution to part (a).

 Apr 11, 2018
edited by GAMEMASTERX40  Apr 11, 2018
 #1
avatar+100588 
+2

We want to solve this :

 

a)

 

7x^2 - 4x + 392  =  1904         subtract  1904 from both sides

 

7x^2 - 4x - 1512   =  0

 

Solving this for x gives = 14.985 yrs  ≈  15 years  (about the year  2000)

 

b)

 

Here's the graph :

 

https://www.desmos.com/calculator/13gj3kx7vy 

 

 

 

cool cool cool

 Apr 11, 2018
edited by CPhill  Apr 12, 2018

7 Online Users

avatar
avatar