Read this example of incorrect sentence structure. Paula is moving to Chicago, winters are cold there. Which revision best corrects the sentence? Paula is moving to Chicago winters are cold there. Paula is moving to Chicago, where winters are cold. Paula is moving to Chicago, so winters are cold there. Paula is moving to Chicago; however, winters are cold there.

7. $2\frac {1}{3}\times \frac {9}{10}\times 1\frac {1}{5}=$

13. $0.4\% =0.4\div 100$ $=\frac {0.4}{\square }=\frac {4}{\square }$ = $\square $

Find $f'(x)$ $f(x)=(2-4x)^{15}$ $f'(x)=$ $\square $

Evaluate. Write your answers as fractions. $\frac {2^{3}}{3}=$ $\square $ $-(\frac {1}{4})^{2}=$ $\square $

4. A person who is 5 feet tall casts a shadow that is 7 feet long. At the same time a nearby tree casts a shadow that is 21 feet long. How tall is the tree?

Factor by grouping to obtain the difference of two squares. $9x^{2}-30x+25-36y^{2}$ $9x^{2}-30x+25-36y^{2}=\square $ (Factor completely.)

The length of a rectangular parking lot at the airport is $\frac {2}{3}$ mile. If the area is $\frac {1}{2}$ square mile, what is the width of the parking lot? A. $\frac {1}{3}mile$ B. $\frac {3}{4}mile$ C. $1\frac {1}{6}mile$ D. $1\frac {1}{3}mile$

Find the derivative. $y=xcoth(2+x^{2})$ $y'(x)=$ $\square $

Which expression is a factor of $4x^{2}-25x-21$ 7 $x-3$ $x-7$ $x-2$ $x-6$

What is the midpoint of $(-2,0)$ and $(8,0)$ A. $(0,0)$ B. $(1,0)$ C. $(3,0)$ D. $(4,0)$