To calculate:To evaluate (f*g)(70) and (g*f)(70). Professor Harsh gave a test to his college algebra class and nobody got more than 80 points (out of

Daniaal Sanchez

Daniaal Sanchez

Answered question

2020-10-27

To calculate:To evaluate (fg)(70) and (gf)(70).
Professor Harsh gave a test to his college algebra class and nobody got more than 80 points (out of 100) on the test.
One problem worth 8 points had insufficient data, so nobody could solve that problem.
The professor adjusted the grades for the class by
a. Increasing everyones

Answer & Explanation

unett

unett

Skilled2020-10-28Added 119 answers

The function f(x)=1.larepresents the score increased by 10%
The function g(x)=x+8 represents the score increased by 8 points
The function (fg)(x)=1.1(x+8) represents the final score when the score is first increased by 8 bonus points and then by 10%
The function (fg)(x)=1.1x+8 represents the final score when the score is first increased by 10% and then by 8 bonus points
Calculation:
Consider (fg)(x)=1.1(x+8)
Plugging x= 70 in the above equation,
(fg)(x)=1.1(70+8)=1.1(78)=85.8
Consider (gf)(x)=1.1x+8
Plugging x = 70 in the above equation,
(gf)(x)=1.1(70)+8=77+8=85.

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