Solve the problem.A ladder is resting against a wall. The top of the ladder touches the wall at a height of 12 ft. Find the length of the ladder if the length is 4 ft more than its distance from the wall.
A. 16 ft
B. 12 ft
C. 24 ft
D. 20 ft
Answer: D
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Solve the equation.
- 4 = 1
A. 15 B. 20 C. -15 D. -20
What is the angle generated for the following conditions? Express your answer in both radians and degrees:
t f a. 3 mSec 30 MHz b. 14 êSec 19.5 MHz c. 120 êSec 4.2 KHz d. 17 mSec 90 Hz
Graph f as a solid line and f-1 as a dashed line in the same rectangular coordinate space. Use interval notation to give the domain and range of f and f-1.f(x) = x2 - 5, x ? 0
A. 
f domain = (-?, ?); range = (-5, ?)
f-1 domain = (-?, ?); range = (5, ?)
B. 
f domain = (0, ?); range = (-5, ?)
f-1 domain = (0, ?); range = (5, ?)
C. 
f domain = (-?, ?); range = (-5, ?)
f-1 domain = (-?, ?); range = (-5, ?)
D. 
f domain = (0, ?); range = (-5, ?)
f-1 domain = (0, ?); range = (-5, ?)
Solve.An open-top rectangular box has a square base and it will hold 256 cubic centimeters (cc). Each side of the base has length x cm. The box's surface area S is given byS(x) = 
+ x2.
Estimate the minimum surface area and the value of x that will yield it.
A. 207 cm2 when x = 6 cm B. 192 cm2 when x = 8 cm C. 256 cm2 when x = 6 cm D. 256 cm2 when x = 8 cm