The equation y = 0.625x – 2.7 can be used to predict the number of minutes, y, it takes Kahlil to check x emails. On Monday, Kahlil spent 25 minutes checking emails. On Tuesday, he checked 35 emails. Which is an accurate comparison?

For Tuesday, substitute 35 emails into the equation: y = 0.625(35) − 2.7 = 19.175 minutes, or about 19 minutes. On Monday, he spent 25 minutes. Since 25 − 19.175 = 5.825, he spent about 6 minutes more checking emails on Monday, matching choice B.

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