Solve. x + y + z = -2 x - y + 4z = 142x + y + z = -1
A. (2, -5, 1)
B. (2, 1, -5)
C. (1, 2, -5)
D. (1, -5, 2)
Answer: D
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Solve the problem.A grasshopper is perched on a reed 5 inches above the ground. It hops off the reed and lands on the ground about 7.3 inches away. During its hop, its height is given by the equation 
, where x is the distance in inches from the base of the reed, and h is in inches. How far was the grasshopper from the base of the reed when it was 3.5 inches above the ground? Round to the nearest tenth.
A. 5.9 inches B. 0.9 inches C. 7.3 inches D. 1.4 inches
The graph of a quadratic function is given. Choose the function's equation.
A. f(x) = -x2 - 4x - 4 B. f(x) = -x2 + 2 C. f(x) = -x2 - 2 D. f(x) = -x2 + 4x + 4
Convert the function to the specified base. f(x) = 
x; convert to base 10
A. f(x) = 
10x
B. f(x) = 10-7 log x
C. f(x) = 10-x log 7
D. f(x) = 10x log 7
Evaluate the expression.sin 90°
A. 0
B. Undefined
C. 
D. 1