Add or subtract, if possible. Assume that all variables represent non-negative values. Simplify your answer. 9
- 4
A. 5
B. 9
- 4
C. 7
D. -7
Answer: D
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The following table shows the area A, in square miles, and the number S of species on islands in a certain island chain. Use power regression to find a formula expressing the number of species as a function of the area. Use two digits of accuracy for the coefficient and for the power. A 44,035 29,083 4,285 2,519 41 S 78 65 38 41 10?
A. ?
B. 
C. ?
D. ?
Solve.The Bislington City school system has 3823 high school students, 2568 middle school students, and 4762 elementary school students. How many students are in the Bislington City school system in total?
A. 11,153 students B. 11,208 students C. 11,061 students D. 11,113 students
Find the median for the set of numbers.90, 39, 203, 105, 256, 247, 247
A. 105 B. 170 C. 203 D. 247
Determine whether the graph of the equation is symmetric with respect to the x-axis, the y-axis, and/or the origin.y = 
A. y-axis B. origin C. x-axis D. x-axis, y-axis, origin E. none