Hello There!
<u><em>First we have to see how much does Gigi earns per hour.</em></u>
<u><em>For gardening, we are going to divide.</em></u>
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<u><em>65 ÷ 5 ≈ 13</em></u>
<u><em></em></u>
<u><em>Gigi earns $13 for gardening for only 1 hour.</em></u>
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<u><em>Second, we have to see how much Gigi earns per hour for office work.</em></u>
<u><em>We will divide </em></u>
<u><em></em></u>
<u><em>90 ÷ 9 ≈ 10</em></u>
<u><em></em></u>
<u><em>Now, we can see that Gigi earned $3 more per hour for gardening than for office work.</em></u>
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Tony : d = 108m.....so Tony walks 108 meters per minute
Mark :
(10,1100),(20,2200)
slope = (2200 - 1100) / (20 - 10) = 1100/10 = 110 meters per minute
So Tony's walk speed is 2 meters per minute slower then Tony's walk speed
The answer is d because the centroid stems from medians in a triangle
