Determine whether the graph is the graph of a function.
A. function
B. not a function
Answer: B
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Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation.-5x + 3y = 83x - 6y = -30
A. (6, 2) B. (-2, -6) C. (2, 6) D. (-6, -2)
Solve the problem.Let angle POQ be designated ?. Angles PQR and VRQ are right angles. If ? = 45°, find the exact length of PQ. 
A. 1
B. 
C. 
D. 0
Translate the sentence into an equation. Use x to represent the unknown number. 10 times the difference of a number and 8 yields 30.
A. 10(x + 8) = 30 B. 10(x - 8) = 30 C. 10x - 8 = 30 D. 30(8 - x) = 10
Susan bought a 4-month $1,400 certificate of deposit. At the end of 4 months, she received $94 simple interest. Find the annual rate of simple interest paid. Round your answer to the nearest percent.
a. 20% b. 2% c. 45% d. 86%