Perform the indicated operations.0.00432 - 0.00419
A. 0.02513
B. -0.00013
C. 0.00013
D. 0.00851
Answer: C
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Find the value of df-1/dx at x = f(a).f(x) = 5x2, x ? 0, a = 2
A. 
B. 20
C. 
D. 
In a series RC circuit, impedance may be calculated by what equation?
a. ER/Z b. R ÄÄÄÄÄ cos é c. Ec ÄÄ Z
Use the distributive property to rewrite the algebraic expression without parentheses. Then simplify the result, if possible.-(a - 10r)
A. a - 10r B. -a - 10r C. -a + 10r D. a + 10r
Solve the problem.A doctor has told a patient to take vitamin pills. The patient needs at least 36 units of vitamin A, at least 9 units of vitamin C, and at least 91 units of vitamin D. The red vitamin pills cost 
each and contain 6 units of A, 1 unit of C, and 7 units of D. The blue vitamin pills cost 
each and contain 4 units of A, 1 unit of C, and 14 units of D. How many pills should the patient take each day to minimize costs?
A. 6 red and 3 blue B. 5 red and 4 blue C. 4 red and 5 blue D. 9 red and 0 blue