Solve the inequality. Write the solution in interval notation and graph the solution set.3x + 4 < 25
A. (-?, 7]
B. [7, ?)
C. (-?, 7)
D. (7, ?)
Answer: C
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A variable force of magnitude F(x) moves a body of mass m along the x-axis from x1 to x2. The net work done by the force in moving the body from x1 to x2 is where v1 and v2 are the body's velocities at x1 and x2. Knowing that the work done by the force equals the change in the body's kinetic energy, solve the problem.How many foot-pounds of work does it take to throw a baseball 60 mph? A baseball weighs 5 oz, or 0.3125 lb.
A. 18 ft-lb B. 1210 ft-lb C. 563 ft-lb D. 38 ft-lb
Write the fraction as a decimal. Round to the nearest thousandth if necessary.
A. 0.025 B. 2.5 C. 0.25 D. 4
Express the exercise as a system of linear equations, then find the solution. Use a calculator where appropriate.Two cars leave town at the same time going in the same direction. One travels at and the other travels as 60 mph. In how many hours will they
apart?
A. 20 hr B. 1 hr C. 4 hr D. 40 hr
Use the graph to answer the question.Find the domain of the rational function graphed below.
A. (-?, -1) ? (-1, ?) B. (-?, -2) ? (-2, ?) C. (-?, -2) ? (-2, 2) ? (2, ?) D. (-?, -2) ? (2, ?)