Rearrange the equation to standard form of a quadratic equation (ax^2+bx+c=0) by switching sides: 5x^2+2x-12=0. Now, use the quadratic equation formula to solve. You should come out with x_1=sqrt61-1/5 and x_2=-1+sqrt61/5. Thus, your answer is B, or two solutions.
1 hour = 60 minutes
13/60 = 0.2
answer: 0.2<span>m/min
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Two hundred thirty-five and six hundred seventy-eight thousandths