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 117 meters tall. If the initial speed is 42 meters per second, how high above the ground will the pebble be after 2 seconds? Round results to the nearest tenth of a meter.
A. 220.6 meters
B. 181.4 meters
C. 191.2 meters
D. 256.4 meters
Answer: B
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Solve the problem.Amy is making a cubic cardboard box and intends it to be 10 in. long on each side. She can't find her ruler, so the errors in her measurements can be up to 10%. Express the possible volume of the box V as an inequality and graph the values of V. 
V = volume in cu. in.
A. 900 ? V ? 1100
V = volume in cu. in.
B. 1000 ? V ? 1331
V = volume in cu. in.
C. 1000 ? V ? 1100
V = volume in cu. in.
D. 729 ? V ? 1331
V = volume in cu. in.
Evaluate the expression using the order of operations. 
+ 
A. -10 B. 18 C. -16 D. 28
Perform the indicated operations.
- 
A. -2 B. 2 C. -6 D. 6
Use an inequality symbol to write the given statement symbolically.2 is less than or equal to -2x.
A. 2 < -2x B. 2 ? -2x C. 2 = -2x D. 2 > -2x