Rewrite the expression without using negative exponents. (Assume all variables represent nonzero real numbers.)-2-4
A. - 
B. 16
C. 
D. -16
Answer: A
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Solve the problem. Express the answer in scientific notation to two decimals unless requested otherwise.Assume that the volume of the earth is 5 × 1014 cubic meters and the volume of a bacterium is 2.5 × 10-16 cubic meters. If the earth could be filled with bacteria, how many would it contain?
A. 5.0 × 1031 bacteria B. 2.0 × 10-30 bacteria C. 5.0 × 10-31 bacteria D. 2.0 × 1030 bacteria
Find the coordinates of the vertex for the parabola defined by the given quadratic function.f(x) = x2 - 6
A. (6, 0) B. (0, -6) C. (0, 6) D. (1, 0)
Test the equation for symmetry with respect to the given axis, line, or pole.r2 = sin(2?); the pole
A.
| May or may not be symmetric with respect to the pole |
B. Symmetric with respect to the pole
Solve the problem.The motion of a projectile that is fired at a 45° angle with the horizontal is given by x = v0
t, 
for t in 
Suppose a projectile is fired with an initial velocity of 100 feet per second at an angle of 45° with the horizontal. Find (a) the time when it strikes the ground and (b) the range (horizontal distance covered).
A. (a) 8.8 sec (b) 625 ft B. (a) 4.4 sec (b) 313 ft C. (a) 8.8 sec (b) 78 ft D. (a) 2.2 sec (b) 78 ft