Use Cramer's rule to solve the system. If D = 0, use another method to complete the solution. 5x + 4y - z = 48 x - 4y - 8z = -69-4x + y + z = -16
A. {(8, 3, 7)}
B. {(7, -5, -7)}
C. {(7, 5, 7)}
D. {(5, 7, 5)}
Answer: C
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Establish the identity.sin(? - ?) cos(? + ?) = sin ? cos ? - sin ? cos ?
What will be an ideal response?
Find the tax. Use $3700 for each personal exemption; a standard deduction of $5800 for single people, $11,600 for married people filing jointly, $5800 for married people filing separately, and $8500 for head of a household; and the tax rate schedule. 
Glenn and Natalie Dowling had combined wages and salaries of $69,992, other income of $5234, dividend income of $322, and interest income of $667. They have adjustments to income of $2411. Their itemized deductions are $8441 in mortgage interest, $1617 in state income tax, $852 in real estate taxes, and $1181 in charitable contributions. The Dowlings filed a joint return and claimed six exemptions.
A. $5076.95 B. $5150.60 C. $7328.25 D. $6890.60
Find the y-intercept of the function.
?
?
A. (0, 3) B. (0, -3) C. (0, 0.50) D. (0, 0.6) E. (0, ?-0.6)
Plot the graph of the equation. Check for symmetries and find all x- and y-intercepts.y = x4 + 6x3 + 9x2
A. 
B. 
C. 
D. 