Lesson 21 Rational Equations Part 2 with Polynomial Degree

Lesson 21 Rational Equations Part 2 with Polynomial Degree

Multiple Choice

Solve for x, 

 $\frac{4}{4-x}=\frac{5}{4+x}$  

•  $\frac{4}{6}$  

•  $\frac{9}{4}$  

•  $\frac{4}{9}$  

• 4

Open Ended

Multiple Choice

Kiran jogs at a speed of 6 miles per hour when there are no hills. He plans to jog up a mountain road, which will cause his speed to decrease by r miles per hour. Which expression represents the time, t, in hours it will take him to jog 8 miles up the mountain road?

• $t=\frac{8-r}{6}$

• $t=\frac{8}{6+r}$

• $t=\frac{6+r}{8}$

• $t=\frac{8}{6-r}$

Multiple Choice

Write g(x) in the form

 $c+\frac{r}{x}$  

 $g\left(x\right)=\frac{x+10}{x}$  

•  $g\left(x\right)=x+\frac{10}{x}$  

•  $g\left(x\right)=1+\frac{10}{x}$  

•  $g\left(x\right)=x-\frac{10}{x+10}$  

•  $g\left(x\right)=1-\frac{1}{x+10}$  

Multiple Choice

A softball player has had 8 base hits out of 25 at bats for a current batting average of 825=.320.

How many consecutive base hits does she need if she wants to raise her batting average to .400?

• 3

• 4

• 5

• 1

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