Solve the problem.If you toss six fair coins, in how many ways can you obtain at least two heads?
A. 58
B. 63
C. 57
D. 64
Answer: C
Mathematics
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Assume you have a graph with vertex set V = {A, B, C, D, E} and edge set E = {CD, CB, DA, DB, EA, AA}.The bridges of the graph are
A. DA and EA. B. DA only. C. DA, EA, and AA. D. CD, DA, and EA. E. none of these
Mathematics
Evaluate the function at the given value of the independent variable and simplify.f(x) = x2 - 4;f(x + 3)
A. x2 + 6x + 5 B. x2 - 1 C. x2 + 6x + 9 D. x2 + 9
Mathematics
Solve.A recipe for cookies calls for 
cups of flour. If the recipe is for 3 dozen cookies, how much flour is needed for 15 dozen cookies?
A. 32
cups
B. 112
cups
C. 45 cups
D. 37
cups
Mathematics
Find the line of symmetry.f(x) = 
x2 + 4x + 
A. x = 4 B. x = -4 C. x = 5 D. x = -13
Mathematics