Review for Differential Equations Test 1

• k = -9/4

• k = 9/4

• k = 0

• k = 4

• linear

• nonlinear

• linear

• nonlinear

Suppose that a cup of coffee begins at 183 degrees and, after sitting in room temperature of 69 degrees for 19 minutes, the coffee reaches 173 degrees. How long will it take before the coffee reaches 163 degrees?

• 38 minutes

• 28 minutes

• 48 minutes

• 58 minutes