Select the correct answer. RE
On what interval is the function RX) = -2|x + 1] - 3 decreasing?
OA. (-1, ∞)
OB.
(-3, ∞)
O C. (-∞, -1)
OD. (-∞, -3)
BE

Firms use marginal analysis to determine prices by a) changing prices in accordance with information from retailers. b) using comparisons with strong competitors to position prices accordingly. c) examining the effect on revenue of small changes to the price of one item. d) trying to minimize production costs by using better and more efficient methods.

What is a system where wealth and property are privately held and profit is the goal rather than providing for collective needs? a. capitalism b. socialism c. communism d. feudalism

Which of these is a disadvantage of hydrogen fuel cells? a. engines that use hydrogen fuel are more efficient than gasoline-powered engines. b. the only emission produced by hydrogen fuel cells is water. c. hydrogen fuel is continually available and useful for heating. d. hydrogen fuel is often purified in a process that emits lots of greenhouse gases.