Find the derivative.s = 4t2 + 7t - 9
A. 4t2 + 7
B. 8t2 + 7
C. 4t + 7
D. 8t + 7
Answer: D
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Find all values of ?, if ? is in the interval [0, 360°) and has the given function value.cos ? = 
A. 210° and 330° B. 60° and 120° C. 150° and 210° D. 60° and 300°
Solve the problem.Find an equation for the level curve of the function f(x, y) = 
dt that passes through the point 
.
A. y2 - x2 = 40 B. y2 - x2 = -32 C. y2 - x2 = 32 D. y2 + x2 = 40
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. $83,234; $13,485.52 B. $81,296; $11,866.50 C. $82,534; $9,849.00 D. $81,296; $13,138.88
Solve the problem.A large square with side length 5 circumscribes a circle, while a smaller square inscribes the same circle. If a point on the figure is chosen at random, what is the probability that the point lies in the shaded area?
A. 
B. 
C. 
D. 