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Questions in Grade College

[Done] Which of the following is not a safety measure when working with mechanical motion? A. Allow time for motion to stop B. Use blocking devices to prevent movement C. Wear cut-resistant gloves D. Keep clothing and body clear of area

[Done] $\left{\begin{array}{l} 9 x-y=15 \ 2 x+8 y=28 \end{array}\right. Raj's Work $\begin{array}{rlrl} 9 x-y & =15 & 2 x+8(15+9 x) & =28 \ -y & =15-9 x & 2 x+120+72 x & =28 \ y & =-15+9 x & 74 x+120 & =28 \ & 74 x & =-92 \ & x & =-\frac{46}{37} \end{array}$ 1 2 3 4 5 $\begin{aligned} 9\left(-\frac{46}{37}\right)-y & =15 \ -\frac{414}{37}-y & =15 \ y & =-\frac{969}{37} \end{aligned}$ What error did Raj make? A. Raj forgot to multiply the value of $x$ by 9 when solving for the value of $y$. B. Raj subtracted 120 from both sides when he solved for the value of $x$. C. Raj forgot the negative sign when substituting $-15+9 x$ for $y$. D. Raj found the value of $-y$ instead of $y$.

[Done] What is the formula for iron(III) fluoride? A. FeF B. $Fe _3 F_3$ C. $FeF _3$ D. FesF

[Done] Select the correct answer. The sum of two consecutive numbers is 157. This equation, where [tex]$n$[/tex] is the first number, represents the situation: [tex]$2n + 1 = 157$[/tex]. What is the first number? A. 77 B. 78 C. 79 D. 80

[Done] True or False? Plenty of people buy "back belts", but that doesn't necessarily mean that they protect your back from injury.

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

[Done] All of the following are characteristics of a good objective EXCEPT: A. profitable B. realistic C. measurable D. time specific E. consistent

[Done] What is the range of the function $y=e^{4 x}$? A. $y<0$ B. $y>0$ C. $y<4$ D. $y>4

[Done] Something China and Japan have in common is A. they borrowed and adapted Western ideas. B. they remained true to their cultural traditions. C. they industrialized to improve their economies. D. they have a history of strong cultural traditions.

[Done] As the amount of money supply decreases, interest rates ____ which, in turn, causes spending to ____. A. decrease; decrease B. increase; increase C. increase; decrease D. decrease; increase