Fill in the blank with one of the words or phrases listed below.
Two or more linear equations are called a(n) 
.
A. solution
B. dependent
C. system of linear equations
D. substitution
Answer: C
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Provide an appropriate response.What does the graph of the equation 
look like?
A. The y-axis B. The xy-plane C. The xz-plane D. The z-axis
Answer the question(s) based on the following situation: Over the last 80 years records have been kept of the annual rainfall in the Tasmanian desert. The distribution of annual rainfall is approximately normal and has no outliers. The minimum of 4.5 inches of rain occurred in 1952; the maximum of 11.7 inches of rain occurred in 1934.Two years ago, the annual rainfall was 7.5 inches. The standardized value corresponding to this rainfall is approximately
A. 1. B. 2.5. C. -0.5. D. 0. E. none of these
Use "intersect" on a graphing calculator to solve the equation. Round the solution to the fourth decimal place.7 - x = 2 log (x + 6)
A. 4.9233 B. 2.3735 C. 9.3735 D. 2.0767
Simplify the expression. Assume that all variables are positive when they appear.
A. -6x2 B. 14x2 C. 36x2 D. not a real number