Use the graph of y = ax2 + bx + c to solve the quadratic equation or inequality.ax2 + bx + c < 0
A. -3 < x < 1
B. -3 ? x ? 1
C. 1 < x < 3
D. x < -3 or x > 1
Answer: A
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Solve the problem.A deep sea diving bell is being lowered at a constant rate. After 12 minutes, the bell is at a depth of 300 ft. After 50 minutes the bell is at a depth of 1500 ft. What is the average rate of change of depth? Round to one decimal place.
A. 0.03 ft per minute B. 31.6 ft per minute C. 30.0 ft per minute D. 24.0 ft per minute
Factor the polynomial completely.125a3 - 64b3
A. (125a - 4b)(a2 + 20ab + 16b2) B. (5a - 4b)(25a2 + 16b2) C. (5a + 4b2)(25a2 - 20ab + 16b2) D. (5a - 4b)(25a2 + 20ab + 16b2)
Solve the problem.Pedro can't decide which size pizza to order. The 10-inch cheese and sausage pizza is $10.99, while the 12-inch deluxe is $11.99. If he gets the 10-inch pizza, the total price will be divided among 3 people. If he chooses the 12-inch pizza, then the total price will be divided among 4 people. Which is the better buy? How much will each person pay? (Use 3.14 for ?. The size of a pizza is its diameter.)
A. 12-inch pizza; $3.00 B. 10-inch pizza; $3.66 C. 12-inch pizza; $3.66 D. 10-inch pizza; $3.00
Solve the equation in the interval [0°, 360°). Give solutions to the nearest tenth, if necessary.2 cos2? + 7 sin ? = 5
A. {30°, 210°} B. ? C. {30°, 330°} D. {90°, 48.6°, 131.4°}