Simplify, if possible.
A. 2b + a
B. -(2b + a)
C. -(2b - a)
D. 
Answer: B
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Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse with vertices (0, ±9) and foci at 
.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
What does the circuit symbol in the figure mean?
?
?
A. AND-gate B. Switch C. Light D. NOT-gate E. Battery
Solve the problem.A spotlight has a parabolic cross section that is 6 ft wide at the opening and 2.5 ft deep at the vertex. How far from the vertex is the focus? Round answer to two decimal places.
A. 0.21 ft B. 0.52 ft C. 0.90 ft D. 0.26 ft
Provide an appropriate response.What rule is applied first to find the derivative of the functionf(x) = (2x3 - 6)
?
A. Product rule B. Quotient rule C. Power rule D. Square root rule