Write the sentence as an equation or inequality. Use x to represent any unknown number.Three subtracted from a number is 0.
A. 3x = 0
B. 3 - x = 0
C. x + 3 = 0
D. x - 3 = 0
Answer: D
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Find the nth term of the geometric sequence.2, - 1, 
, - 
, 
A. an = 2 ? 
n-1
B. an = 2 ? 
n-1
C. an = 2 ? 
n
D. an = 2 ? 
n + 1
Use the given trigonometric function value of ? to find the requested trigonometric function value of the acute angle ?. Rationalize the denominators where necessary.sin ? = 
Find sec ?.
A. 
B. 
C. 
D. 
Find the equation of the tangent line to the graph of f at the given point.f(x) = x2 + 5x at (4, 20)
A. y = 13x - 32 B. y = 13x - 72 C. y = 2x + 5 D. y = 2x - 5
Solve the problem.The price of electric guitars has varied considerably in recent years. The data in the table relates the price P, in dollars, to time t, in years, where t = 1 corresponds to 1988. Use a cubic function fitted to the data to predict the price of an electric guitar in 1997. Average price, p, 
A. $670.48 B. $893.53 C. $827.42 D. $443.52