Solve the problem.An object's altitude, in meters, is given by the polynomial h + vt - 4.9t2, where h is the height in meters from which the launch occurs, v is the initial upward speed in meters per second, and t is the number of seconds for which the rocket is airborne. A pebble is shot upward from the top of a building 171 meters tall. If the initial speed is 35 meters per second, how high above the ground will the pebble be after 3 seconds? Round results to the nearest tenth of a meter.
A. 320.1 meters
B. 503.9 meters
C. 261.3 meters
D. 231.9 meters
Answer: D
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Solve the problem.The Tasmanian House of Representatives has 435 members. A set of 3 leaders - a Speaker, a Whip, and a Secretary - must be selected. How many different sets of leaders can be selected?
A. 435 × 434 × 433
B. 4353
C. 3435
D. 
E. none of these
Solve the problem.A rare species of insect was discovered in the rain forest of Costa Rica. Environmentalists transplant the insect into a protected area. The population of the insect t months after being transplanted is P(t) = 
.a) What was the population when t = 0?b) What will the population be after 10 years?c) What is the largest value the population could reach?
What will be an ideal response?
Graph the system of inequalities.
+ 
? 1
+ 
? 1
A. 
B. 
C. 
D. 
Use the properties of real numbers to simplify the expression.- 
(8y - 2x - 8z)
A. -20y - 5x + 20z B. -20y - 5x - 20z C. -20y + 5x + 20z D. -20y + 5x - 20z