If N is the average number of species found on an island and A is the area of the island, observations have shown that N is approximately proportional to the cube root of A. Suppose there are 20 species on an island whose size is 512 square miles. How many species are there on an island whose area is 1500 square miles. Round your answer to the nearest whole number.

When a substance has a density that is less than the density of water, it floats. A wooden sphere has a radius of 4 centimeters and a mass of 250 grams. Will the wooden sphere float? Use the fact that the density of water is 1 gram per cubic centimeter. Round answers to the nearest hundredth. A.  The density of the wooden sphere is 0.93 grams per cubic centimeter, which is less than the density of water, so it will float.   B.  The density of the wooden sphere is 1.24 grams per cubic centimeter, which is greater than the density of water, so it will not float.   C.  The density of the wooden sphere is 0.93 grams per cubic centimeter, which is less than the density of water, so it will not float.   D.  The density of the wooden sphere is 1.24 grams per cubic centimeter, which is greater than the density of water, so it will float.

There are 2.54 cm in 1 inch, and 12 inches in 1 foot. A. Convert 300 ft to cm. (Round to the nearest 100th) B. Write down an equation of the form C = k * F where C=Centimeters and F=feet, k=proportionality constant (round to 2 decimal places)