Find all real solutions of the equation.
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Add or subtract by first simplifying each radical and then combining any like radicals. Assume that all variables represent positive numbers.
+ 
+ 
+ 
A. 109
+ 21
B. 
+ 
+ 21
C. 13
+ 21
D. 13
+ 
+ 
Test the equation for symmetry with respect to the given axis, line, or pole.r = -4 cos ?; the polar axis
A. May or may not be symmetric with respect to the polar axis B. Symmetric with respect to the polar axis
The simple interest on an investment is directly proportional to the amount of the investment. By investing $6000 in a certain certificate of deposit, you obtained an interest payment of $276.00 after 1 year. Determine a mathematical model that gives the interest, I , for this CD after 1 year in terms of the amount invested, P.
A. 
B. 
C. 
D. 
E. 
Solve the problem.The polynomial function L(p) = p3 - 5p2 + 20 gives the rate of gas leakage from a tank as pressure increases in p units from its initial setting. Will an increase of 3 units result in a lower rate of leakage compared to the initial setting?
A. Yes B. No