Solve the system by the addition method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(2, -2)}
B. {(-2, 2)}
C. no solution; ?
D. infinitely many solutions; 
or 
Answer: A
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Solve the equation by the method of your choice. Simplify irrational solutions, if possible.3x2 = 4x + 7
A. 
B. 
C. 
D. 
Provide an appropriate response.Find the amount of an annuity consisting of payments of $100 paid at the end of each quarter for five years at the rate of 5% compounded quarterly. Also find the compound interest.
Fill in the blank(s) with the appropriate word(s).
Simplify the expression. Write the result using positive exponents only.
A. 
B. 
C. 
D. 
Solve the problem.A Ferris wheel has a diameter of 340 feet and the bottom of the Ferris wheel is 8 feet above the ground. Find the equation of the wheel if the origin is placed on the ground directly below the center of the wheel, as illustrated. 
A. x2 + y2 = 28,900 B. x2 + (y - 170)2 = 115,600 C. x2 + (y - 170)2 = 28,900 D. x2 + (y - 178)2 = 28,900