1) The volume of a rectangular prism is modeled by the
equation 𝑉(𝑥) = 3𝑥 3 + 16𝑥 2 + 5𝑥 . Which of the
following could be the linear factor that represents the
length of the prism, which is the largest of the dimensions?
A. 3𝑥 + 5
Assume 𝑥 ≥ 3
B. 𝑥 + 5
C. 3𝑥 + 1
D. None of the above
2) A classmate subtracted the expressions. Which of the
following is NOT an error in the work shown?
A) They didn’t distribute the negative sign when combining
the two expressions into one.
B) They didn’t use the reciprocal of the second rational
expression
C) They didn’t state the variable restrictions
D) They didn’t simplify the final answer
1) C 2)B