1: $\textbf{(C)}\ 10\frac{2}{3}$

2: $\textbf{(D)}\ 21$

3: $\textbf{(E)}\ \text{None of these}$

4: $\textbf{(A)}\ \frac{a}{b}$

5: $\textbf{(A)} 6:$ (Error compiling LaTeX. ! Missing $inserted.)\textbf{(C)}\ y^{2}+10y-7=0$7:$\textbf{(B)}\ kggi00t+10u+1$8:$\mathrm{(C) }300\%$9:$\textbf{(A)}\ r^{2}$10:$\mathrm{(D)}\text{ } 3+\sqrt6$11:$\mathrm{(A)}\text{ }\mathrm{ Increases}$12:$\mathrm{(C)}\text{ remains constant}$13:$\textbf{(D)}\ 0,1,2\text{ and }4$14:$\textbf{(D)}\ \text{There is no solution}$15:$\textbf{(E)}\ \text{Non-existent}$16:$\mathrm{(B)}\ 5$17:$\mathrm{(C)}\ y=100-5x-5x^2$18:$\textbf{(E)} \text{ Only 1 is true}$19:$\textbf{(C)}\ \frac{md}{m+r}\text{ days}$20:$\textbf{(D)}\ 2$21:$\textbf{(B)}\ 24\text{ in}^{3}$22:$\textbf{(D)}\ 28\%$23:$\textbf{(B)}\ \ 83.33$24:$\textbf{(E)}\ 1\text{ real root}$25:$\textbf{(D)}\ 5$26:$\textbf{(E)}\ \frac{10^{b}}{n}$27:$\textbf{(B)}\ 34\text{ mph}$28:$\textbf{(B)}\ 8\text{ mph}$29:$\textbf{(B)}\ \dfrac{1}{8}+\dfrac{1}{x}=\dfrac{1}{2}$30:$\textbf{(A)}\ 40$31:$\textbf{(C)}\ 1:4$32:$\textbf{(D)}\ 8\text{ ft}$33:$\textbf{(D)}\ 36$34:$\textbf{(D)}\ \dfrac{5}{2\pi}\text{ in}$35:$\textbf{(B)}\ 4\text{ in}$36:$\textbf{(A)}\ 125\%$37:$\textbf{(E)}\ \text{Only some of the above statements are correct}$38:$\textbf{(B)}\ \text{Is satisified for only 2 values of }x$39:$\textbf{(E)}\ \text{Only }4\text{ and }5$40:$\textbf{(D)}\ 2$41:$\textbf{(D)}\ \dfrac{4ac-b^2}{4a}$42:$\textbf{(D)}\ \sqrt{2}$43:$\textbf{(E)}\ \text{None of these}$44:$\textbf{(C)}\ \text{Cuts the }x\text{-axis}$45:$\textbf{(A)}\ 4850$46:$\textbf{(E)}\ \text{The area of the triangle is 0}$47:$\textbf{(C)}\ x=\dfrac{bh}{2h+b}$48:$\textbf{(C)}\ \text{Equal to the altitude of the triangle}$49:$\textbf{(D)}\ \text{A circle with radius }3\text{ inches and center }4\text{ inches from }B\text{ along } BA$50:$\textbf{(E)}\ 5\text{:}30\text{ p.m.}$