Determine if the given set of whole numbers is closed under addition.{10}
A. Not closed
B. Closed
Answer: A
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Simplify the expression.6g + 22 - 5
A. 6g + 17 B. 23g C. 6g - 17 D. 6g + 27
A person's weight depends both on the daily rate of energy intake, say C calories per day, and the daily rate of energy consumption, typically between 12 and 20 calories per pound per day. Using an average value of 16 calories per pound per day, a person weighing w pounds uses 16w calories per day. If 
, then weight remains constant, and weight gain or loss occurs according to whether C is greater or less than 16w.To determine how fast a change in weight will occur, a plausible assumption is that dw/dt is proportional to the net excess (or deficit) 
in the number
of calories per day.Assume C is constant and write a differential equation to express this relationship. Use k to represent the constant of proportionality.
A. 
= k(16w - C)
B. 
= k(C - 16w)
C. 
= C(k - 16w)
D. 
= k(C + 16w)
List the numbers from the set that are of the type indicated.B = {20, 
, -22, 0, 0.95}Rational numbers
A. 
B. 20, 0
C. 
, 0.95
D. 20, -22, 0, 0.95
Solve the problem.The formula A = 159e0.023t models the population of a particular city, in thousands, t years after 2011. When will the population of the city reach 183 thousand?
A. 2019 B. 2018 C. 2017 D. 2016