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College algebra math homework?
Can someone help me with this? I keep coming up with the answer 124, when the book says it's 10.
"You are riding along an expressway traveling x miles per hour. The formula
S = 0.015x^2 + x +10
models the recommended safe distance, S, in feet, between your car and other cars on the expressway. What is the recommended safe distance when your speed is 60 miles per hour?"
Don't I just replace all the x's with 60?
oops, my fault, i was looking at the wrong answer section. it is 124.
thanks anyway
2 Answers
- eliLv 71 decade agoFavorite Answer
i get 124 too
just because it's in your text doesn't necessarily mean it's correct
yes you plug 60 in for x
just because the college book stores rip off students doesn't mean they're right
- bezi_catLv 61 decade ago
That doesn't work at all. Either you copied it down wrong or the text is wrong.