Solve the system by the elimination method.-6x + 5y = -518x - 15y = 15
A. {(30, -25)}
B. {(-25, 30)}
C. {(x, y)|-6x + 5y = -5}
D. ?
Answer: C
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An electric company charges a connection fee of $61 plus $0.19 for each kilowatt-hour of electricity used. ? A: Write a formula that gives the cost E, in dollars, of connecting and using h kilowatt-hours of electricity. ? B: Solve the equation you found in part A to express the kilowatt-hours used as a function of the cost E. ? C: How many kilowatt-hours are used if the total charge (connection plus charge for electricity usage) is $155.67?
What will be an ideal response?
Solve triangle ABC. If necessary, round the answer to the nearest tenth.b = 4, c = 6, A = 85°
A. a = 6.9, B = 35.3°, C = 59.7° B. a = 6.9, B = 59.7°, C = 35.3° C. a = 5.9, B = 59.7°, C = 35.3° D. a = 7.9, B = 35.3°, C = 59.7°
Find the value of the expression using the given values.(
)2?x = 7
A. 
B. 
C. 49
D. 7
Find the amount of an annuity if $200 per month is paid into it for a period of 17 years, earning interest at the rate of 7% per year compounded continuously. Round you answer to the nearest dollar. ?
A. $284,751 B. $130,510 C. $78,414 D. $84,009 E. $144,734