Use order of operations to simplify the expression.-7 + 
A. 2
B. 16
C. 8
D. -6
Answer: A
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Solve the inequality 
. Round your answer to two decimal places.
?
A. ?
B. ?
C. ?
D. 
Write an algebraic expression to answer the question and simplify.A stack of currency contains 60 bills. In the stack are x $20 bills. The rest are $50 bills. How much money is in the stack of bills?
A. 20x + 50(60 - x); -30x + 3000 dollars B. 20x - 50(60 - x); 70x - 3000 dollars C. 20x + 50(60 - x); 30x + 3000 dollars D. Cannot be solved
Identify the lines about which the figure has reflective symmetry.
A. m and o B. l, m, n, and o C. l only D. l and n
Solve the problem.The logistic growth function f(t) = 
describes the population of a species of butterflies 
after they are introduced to a non-threatening habitat. How many butterflies are expected in the habitat after 13 months?
A. 801 butterflies B. 451 butterflies C. 910 butterflies D. 10,400 butterflies