Solve the system for x and y. Show your answer as an ordered pair, (x, y). -7x + 84 = 7y 2x + 4y = 42
A. (2, 10)
B. (3, 9)
C. No solution
D. (3, 10)
Answer: B
Mathematics
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Find the equation of the line that has the given properties. Write the equation in slope-intercept form, if possible. Contains (-3, -3); perpendicular to the line y = -3x - 1
A. y = - 
x - 2
B. y = 3x - 2
C. y = 
x - 2
D. y = -3x - 2
Mathematics
Sketch the graph of f.f(x) = 
x - 1
A. 
B. 
C. 
D. 
Mathematics
Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.sin 495°
A. 
B. - 
C. 
D. - 
Mathematics
Solve the problem.Using a phone card to make a long distance call costs a flat fee of $0.34 plus $0.33 per minute starting with the first minute. Use an equation to find the total cost of a phone call which lasts 28 minutes.
A. $9.24 B. $9.58 C. $28.11 D. $9.85
Mathematics