The height of the water in a tank decreases by 3.5 cm each day. When the tank is
full, the water is 10 m deep. The water tank needs to be refilled when the water
height drops below 4 m.
Write a question that could be answered by solving the equation
10 - 0.035d = 4.

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Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

Solve 2x2 + 8 = 0 by graphing the related function. there are two solutions: . there are no real number solutions. there are two solutions: 2 and -2