Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (3, 3, 1) for 
+ 
+ 
= 0.
A. 
B. 27
C. - 
D. - 27
Answer: D
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A child has an infection and the doctor orders erythromycin drops 125 mg po q6h. The bottle states that the usual dosage is 30-50 mg/kg/day; 100 mg per 2.5 mL (dropperful). Calculate the maximum dosage for a child that weighs 32 lb. Does the doctor's order exceed the maximum recommended dosage?
A. 1600 mg/day; no B. 725 mg/dose; yes C. 725 mg/day; no D. 1600 mg/dose; yes
Solve by substitution:
A) (3, 0)
B) (4, –4)
C) (2, 4)
D) Dependent
E) No solution
List the numbers from the set that are of the type indicated.{17, 
, -6, 0, 
, - 1
, 7.4}Whole numbers
A. 17, -6, 0 B. 17, -6 C. 17, 0 D. 17
Factor completely. If the polynomial is prime, so state.81x2 - 126x + 49
A. (81x + 1)(x + 49) B. (9x + 7)2 C. (9x - 7)2 D. (9x - 7)(9x + 7)