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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

I won't be able to post the solution. This is a quadratic equation 200,000r^2 + 400,000r - 28,980. Use factoring to solve r, or quadratic formula. The final answer is x= - 207/100 or x = 7/100. Choose the positive x, which is 7/100. Change 7/100 to percent. The Final Answer is 7 %.

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