Solve the problem.A local phone company charges a connection fee of $1.57 plus $0.56 per minute for each phone call. If we let x represent the number of minutes spent on the phone, the equation that gives the cost (y) of each phone call can be represented by 
Find the y-intercept of this equation, and explain what it signifies.
A. (0, 1.57); The charge per minute for each phone call.
B. (0, 1.57); The connection fee for each phone call.
C. (0, 0.56); The connection fee for each phone call.
D. (0, 0.56); The charge per minute for each phone call.
Answer: B
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Solve the problem.At noon, ship A was 14 nautical miles due north of ship B. Ship A was sailing south at 14 knots (nautical miles per hour; a nautical mile is 2000 yards) and continued to do so all day. Ship B was sailing east at 8 knots and continued to do so all day. The visibility was 5 nautical miles. Did the ships ever sight each other?
A. No. The closest they ever got to each other was 6.9 nautical miles. B. Yes. They were within 3 nautical miles of each other. C. Yes. They were within 4 nautical miles of each other. D. No. The closest they ever got to each other was 7.9 nautical miles.
Evaluate the expression for the given value or values.- 
, for y = -45, z = 5
A. -5 B. 9 C. 5 D. -9
The graph of a function f is given. Use the graph to answer the question.Is f(3) positive or negative?
A. positive B. negative
Write the first three terms in the binomial expansion, expressing the result in simplified form.(x + 6)20
A. x20 + 1140x19 + 6840x18 B. x20 + 120x19 + 6840x18 C. x20 + 6840x19 + 6840x18 D. x20 + 120x19 - 6840x18