Use the fundamental identities and appropriate algebraic operations to simplify the expression.sin2 x(cot2 x + 1)
A. -1
B. cos2 x + 1
C. tan2 x
D. 1
Answer: D
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Find the largest open interval where the function is changing as requested.Decreasing f(x) = - 
A. (-?, 3) B. (-?, -3) C. (-3, ?) D. (3, ?)
Provide an appropriate response.Use a graphing calculator to solve the equation 7x - 12 = x + 30.
A. 30 B. 0 C. -7 D. 7
Find the amount of taxable income and the tax owed for the following people. The letter following the name indicates the marital status and all married people are filing jointly. Use $4050 for each personal exemption; $6300 as the standard deduction for single taxpayers, $12,600 for married taxpayers filing jointly, and $9300 for head of household and the following tax rate schedule.
A. $64,531; $10,430.25 B. $66,179; $11,910.12 C. $64,679; $11,075.25 D. $64,679; $11,312.25
Solve.Given two 15-cm sides and two 10-cm sides, how many quadrilaterals can be formed with a 75° angle?
What will be an ideal response?