Representative data read from a plot on runoff sediment concentration for plots with varying amounts of grazing damage,

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Representative data read from a plot on runoff sedimentconcentration for plots with varying amounts of grazing damage,measured by the percentage of bare ground in the plot, are givenfor steeply sloped plots.
(a) Using the data for steeply sloped plots, find the equationof the least-squares line forpredicting y runoff sediment concentrationusing x = percentage of bare ground. (Give theanswer to two decimal places.) =
(b) What would you predict runoff sediment concentration to be fora steeply sloped plot with 15% bare ground? (Round youranswer to the nearest whole number.)