| A | B |
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| Find the equation of each line satisfying the given conditions. Write each equation using function notation. Through (2, -6); parallel to 6x + 3y = 5 | f(x) = -2x - 2 |
| Find the equation of each line satisfying the given conditions. Write each equation using function notation. Slope -1; y-intercept (0, -2) | f(x) = -x - 2 |
| The cost of renting a minivan for a day is given by the linear function C(x) = 0.3x + 42, where x is the number of miles driven. Find the cost of renting a minivan for a day and driving it 150 miles. | $87 |
| Solve each variation problem. A is directly proportional to B. If A = 6 and B = 14, find A when B = 21. | 9 |
| C is inversely proportional to D. If C = 12 when D = 8, find C when D = 24. | 4 |
| According to Boyle's law, the pressure exerted by a gas is inversely proportional to the volume, as long as the temperature stays the same. If a gas exerts a pressure of 1250 pounds per square inch when the volume is 2 cubic feet, find the volume when the pressure is 800 pounds per square inch. | 3.125 cu. ft |
| The surface area of a spere varies directly as the square of its radius. If the surface area is 36pi square inches when the radius is 3 inches, find the surface area when the radius is 4 inches. | 64pi sq. in. |
| Suppose that W is inversely proportional to V. If W = 20 when V = 12, find W when V = 15. | 16 |
| Suppose that Q is jointly proportional to R and the square of S. If Q = 24 when R = 3 and S =4, find Q when R = 2 and S = 3. | 9 |
| When an anvil is dropped into a gorge, the speed with which it strikes the ground is directly proportional to the square root of the distance it falls. An anvil that falls 400 feet hits the ground at a speed of 160 feet per second. Find the height of a cliff over the gorge if a dropped anvil hits the ground at a speed of 128 feet per second. | 256 ft |
