Solve.x - y + z = 9x + y + z = 1x + y - z = -1
A. (1, -4, 4)
B. (1, 4, -4)
C. (4, 1, -4)
D. (4, -4, 1)
Answer: D
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A cup of coffee with temperature 101°F is placed in a freezer with temperature 0°F. After 7 minutes, the temperature of the coffee is 56.5°F. What will its temperature be 13 minutes after it is placed in the freezer? Round your answer to the nearest degree.
A. 29°F B. 27°F C. 34°F D. 32°F
Find the axis of symmetry of the parabola defined by the given quadratic function.f(x) = 4 - (x + 5)2
A. x = 4 B. x = -4 C. x = -5 D. x = 5
Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 
B. 
C. 1
D. 
Solve the formula for the stated variable.S = 2?rh + 2?r2; solve for h
A. h = 
- 1
B. h = S - r
C. h = 2?(S - r)
D. h = 