Find the indicated root, or state that the expression is not a real number.-
A. 5
B. not a real number
C. -5
D. -
Answer: C
Mathematics
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Solve the problem.An element decays at the rate of S(t) = se-0.043t, where s is the initial amount in grams and t is the time in years since this initial amount was present. If you have a 80-gram piece of this element, how many grams will you have 5 years from now? Round to the nearest tenth of a gram.
A. 99.2 g B. 64.5 g C. 0.8 g D. 38.3 g
Mathematics
Solve the problem.Find (f - g)(5) when f(x) = 4x2 - 1 and g(x) = x + 7.
A. 87 B. 97 C. -104 D. 101
Mathematics
Use order of operations to simplify the expression.1 - (13 + 21)
A. -33 B. 35 C. -7 D. 9
Mathematics
Simplify.
A. 1024
B. 16
C. 4
D. 4
Mathematics