Solve.There are 3.8 milligrams of iron in a 3.5 ounce serving of beef. How much iron is in 6 ounces of beef? Round the answer to one decimal place.
A. 2.2 mg
B. 5.2 mg
C. 7.5 mg
D. 6.5 mg
Answer: D
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Find the equation of the tangent plane to the given surface at the indicated point.x2 + 2yz + y2 - 3xz - z2 - 18 = 0, (1, -3, -1)
A. 5(x - 1) - 8(y + 3) + 13(z + 1) = 18 B. 5(x - 1) - 8(y + 3) - 7(z + 1) = 0 C. 5(x - 1) - 8(y + 3) = -7(z + 1) D. 5(x + 1) - 8(y - 3) - 7(z - 1) = 0
Evaluate the integral.
A. 
(ln x7)2 + C
B. 
(ln x7)2 + C
C. 
(ln x7)2 + C
D. 
+ C
Determine the domain and range of the function. Then graph it.f(x) = 
A. domain = [-5, ?), range =[0, ?)
B. domain = (-?, ?), range = (-?, ?)
C. domain = [0, ?), range = [5, ?)
D. domain = (-?, ?), range = [-5, 5]
Simplify the expression. Express the answer so that only positive exponents occur. Assume that all variables are positive.
A. 64x69/20 B. 64x21/20 C. 4x21/20 D. 4x69/20