Questions in Grade College

Questions in Grade College

[Answered] Multiply. $(2 x-y)(3 x+y)$

[Answered] Medium-temperature refrigeration systems are classified as having evaporators that operate in what temperature range? A. -10 °F to 32 °F B. 0 °F to 20 °F C. 20 °F to 40 °F D. 32 °F to 50 °F

[Answered] Simplify, using the rule for order of operations if necessary: [tex]5-(5-4)-9=[/tex]

[Answered] 3) $5[a-3(4 a-5 b)]+4[3(2 a-b)-2(b-2 a)]+15 a=$ 4) $2 a-(-3 x+2\{-a+3 x-2[-a+b-(2+a)]\})+3 x+8-4 b=$ 5) $-4\{m-2 n-[3 n+2(2 n-m)+5(4 n-3 m)]\}+5(m-n)+67 m=$ 6) $a-(a+b)-3\{-2 a+[-2 a+b+2(b-1)-a-b+1]\}-3+7 b=$

[Answered] Which expression can be used to determine the average rate of change in [tex]f(x)[/tex] over the interval [tex]$[2,9]$[/tex]?

[Answered] A major Renaissance novel about a man who fights imaginary enemies is A. The Prince. B. Don Quixote. C. The Book of the Courtier. D. The Divine Comedy.

[Answered] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Answered] Consider this reaction: $KOH + HBr \rightarrow KBr + H _2 O$ Which statement is most likely true about HBr? A. It turns blue litmus red. B. It reacts with carbon dioxide to form a carbonate. C. It feels slippery.

[Answered] Which of the following describes the transformation of $g(x)=3(2)^{-x}+2$ from the parent function $f(x)=2^x$? A. reflect across the $x$-axis, stretch the graph vertically by a factor of 3, shift 2 units up B. reflect across the $y$-axis, stretch the graph vertically by a factor of 2, shift 3 units up C. reflect across the $x$-axis, stretch the graph vertically by a factor of 2, shift 3 units up D. reflect across the $y$-axis, stretch the graph vertically by a factor of 3, shift 2 units up

[Answered] Select the correct answer. Which statement is true about this radical function? [tex]$f(x)=-\sqrt{x+6}$[/tex] A. As [tex]$x$[/tex] approaches positive infinity, [tex]$f(x)$[/tex] approaches positive infinity. B. As [tex]$x$[/tex] approaches negative infinity, [tex]$f(x)$[/tex] approaches positive infinity. C. As [tex]$x$[/tex] approaches positive infinity, [tex]$f(x)$[/tex] approaches negative infinity. D. As [tex]$x$[/tex] approaches negative infinity, [tex]$f(x)$[/tex] approaches negative infinity.