Which task related to the Fundamental Theorem of Arithmetic did Zazkis and colleagues determine students struggled with the most?
a. Decomposing a whole number into the product of prime factors
b. Correctly carrying out divisibility rules
c. Understanding that prime decompositions are unique
d. Memorizing the statement of the Fundamental Theorem of Arithmetic
Ans: c
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Solve. Where appropriate, include approximations to the nearest thousandth. If no solution exists, state this.log x - log(x + 4) = 1
A. 
B. - 
C. - 
D. No solution
Provide an appropriate response.If a ? 0, 
is called the reciprocal of a. Use this definition to express the reciprocal of the following expression in the form 
Fill in the blank(s) with the appropriate word(s).
Solve the problem using matrices.The final grade for an algebra course is determined by grades on the midterm and final exam. The grades for four students and two possible grading systems are modeled by the following matrices. src="https://sciemce.com/media/4/ppg__tttt0518191431__f1q86g6.jpg" style="vertical-align: -15.0px;" />Find the final course score for Student 3 for both grading System 1 and System 2.
A. System 1: 44.2; System 2: 53
B. System 1: 85; System 2: 83
C. System 1: 77.2; System 2: 76
D. System 1: 67.4; System 2: 98.6
Solve the equation.1 - 
= 
A. 
B. 
C. 
D. 