SOLUTION: Richard drove his rig at ‘x’ mph for 3 hours, then increased his speed to (x + 15) mph and drove 2 more hours. Write a polynomial that represents the total distance that he travele

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Question 60110This question is from textbook Elementry and Intermediate Algebra
: Richard drove his rig at ‘x’ mph for 3 hours, then increased his speed to (x + 15) mph and drove 2 more hours. Write a polynomial that represents the total distance that he traveled. How much distance he covered if x = 45 Mph? This question is from textbook Elementry and Intermediate Algebra

Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
Richard drove his rig at ‘x’ mph for 3 hours, then increased his speed to (x + 15) mph and drove 2 more hours. Write a polynomial that represents the total distance that he traveled. How much distance he covered if x = 45 Mph?
Distance = rate times time, d=rt
:Polynomial
d(x)=3x+2(x+15)
d(x)=3x+2x+30
d(x)=5x+30
:
d(45)=5(45)+30
d(45)=225+30
d(45)=255 mi
Happy Calculating!!!