Abby, Benji, and Caitlin are training for a race. Last week, Abby ran 6One-half miles and Benji ran 8 miles. They ran a total of 30.8 miles altogether. This bar model represents the problem. How many miles did Caitlin run? A whole labeled Total divided into 3 parts. Part 1 is labeled Abby, 6 and one-half. Part 2 is labeled Benji, 8. Part 3 is labeled Caitlin, question mark. Which statements about this problem are true? Check all that apply. Abby ran 6One-half miles. Caitlin ran 30.8 miles. This is a comparison problem. The total bar represents 30.8 miles. The answer will be written in this form: "Caitlin ran miles."

C and D

Step-by-step explanation:

This is a comparision  problem. (C)

The totla bar represents 30.8 miles. (D)

Caitlin ran 16.3 miles.

Hope this helps!

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.