SOLUTION: Use an inequality and the five-step process to solve the problem. If the formula R = -0.037t + 50.1 can be used to predict the world record in the 400-meter dash t years after 1

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Question 239377: Use an inequality and the five-step process to solve the problem.
If the formula R = -0.037t + 50.1 can be used to predict the world record in the 400-meter dash t years after 1925, for what years will the world records be 48.1 seconds or less? thank you
Answer by nyc_function(2741) About Me  (Show Source):
You can put this solution on YOUR website!
From your question, I understand that R = 48.1 and we must solve for t.
I assume this to be the case. You did not say what R stands for.
48.1 = -0.037t + 50.1 and solve for t. Can you finish now?
If not, write back. I hope this is what you are looking for.
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I read your question again and made some arragements.
We need to solve for t, which represents time IN YEARS.
48.1 = -0.037t + 50.1
48.1 - 50.1 = -0.037t
-2 = -0.037t
We now divide both sides by -0.037 to find t.
-2/-0.037 = t
54.1 = t
Understand?