Without graphing, determine whether the graph of the quadratic function opens up or opens down.f(x) = -4 + 2x2 - 5
A. opens up
B. opens down
Answer: A
Mathematics
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Write the fraction as a decimal.
A. 0.006 B. 0.6 C. 6.0 D. 0.06
Mathematics
Solve the problem.An initial investment of $660 is appreciated for 11 years in an account that earns 1% interest, compounded continuously. Find the amount of money in the account at the end of the period.
A. $722.81 B. $39,516,933.46 C. $736.74 D. $1650.62
Mathematics
Evaluate the expression. Write your answer without exponents.(-2)-3
A. 8
B. - 
C. 
D. -8
Mathematics
Solve using the elimination method. x - 7y = 22x - 7y = -3
A. No solution B. (5, -2) C. (-4, -5) D. (-5, -1)
Mathematics