Given that f ( x ) = x 2 − 9 x and g ( x ) = x + 6 , find:
a)(f+g)(1)
b)(f−g)(1)
c)(fg)(1)
d)(fg)(1)
Given that f ( x ) = ( x − 2 ) 2 and g ( x ) = 5 − 2 x , find:
a)(f+g)(−4)=
b)(f−g)(−4)=
c)(fg)(−4)=
d)(fg)(−4)=
In a Northwest Washington County, the speeding fines are determined by the formula: F ( s ) = 13 ( s − 45 ) + 60 where F ( s ) is the cost in dollars of the fine if a person is caught driving at a speed of s miles per hour. If a fine comes to a total of $ 476 , how fast in mph was the person driving? m p h
