Find the standard form of the equation of the parabola with the given characteristic and vertex at the origin.
?
Directrix: 
?
A. 
B. 
C. 
D. 
E. 
Answer: E
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Find the formula and limit as requested.For the function f(x) = 10x + 4, find a formula for the upper sum obtained by dividing the interval [0, 3] into n equal subintervals. Then take the limit as n?? to calculate the area under the curve over [0, 3].
A. 12 + 
; Area = 57
B. 12 - 
; Area = - 33
C. 12 + 
; Area = 
D. 12 + 
; Area = 
Find the axis of symmetry of the graph of the parabola.f(x) = 7(x + 
)2 - 16.13
A. x = 
B. y = -16.13
C. x = -
D. x = -16.13
Use an inequality symbol to write the given statement symbolically.-x is positive
A. -x ? 0 B. -x > 0 C. -x ? 0 D. -x < 0
Provide an appropriate response.Dr. Melner can see 9 patients in 3 hours. If she kept up this pace, how long would we expect her to take to see 45 patients? Answer with a complete sentence.
A. It would take Dr. Wong 14 hours to see 45 patients. B. It would take Dr. Wong 135 hours to see 45 patients. C. It would take Dr. Wong 27 hours to see 45 patients. D. It would take Dr. Wong 15 hours to see 45 patients.