Find the indicated term of the geometric sequence.a2 = -9, r = -3; Find a5.
A. -81
B. -243
C. 27
D. 243
Answer: D
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Solve the problem.The growth in the population of a certain rodent at a dump site fits the exponential function 
where t is the number of years since 1984. Estimate the population in the year 2000.
A. 509 B. 786 C. 393 D. 809
Solve the problem.A projectile is fired from a height of 8.5 feet with an initial velocity of 158 ft/sec at an angle of 40° with the horizontal. The parametric equations for the path of the projectile are x = (158 cos 40°)t, and y = 8.5 + (158 sin 40°)t - 16t2,where x and y are in feet and t is in seconds. How long does it take the projectile to hit the ground? Round your answer to the nearest tenth of a second.
A. 6.3 seconds B. 6.4 seconds C. 12.9 seconds D. 8.2 seconds
Add or subtract. Simplify your answer to lowest terms.
+ 
- 
A. x3 - 7x2 B. x2 C. x2 + 1 D. x2 + x - 7
Add or subtract terms whenever possible.7
+ 5
A. 8
B. 12
C. -22
D. 22