Select the correct answer What is the degree of the polynomial R(x) = 7x5 - 9X4 - 2x + 3x - x + 7?

l.ln.lln.k.nkl

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x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

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last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x