Translate the phrase to an algebraic expression. Use n for the variable unless otherwise stated.four decreased by some number
A. n - 4
B. 4 + n
C. 4 - n
D. 4 ÷ n
Answer: C
Mathematics
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The attendance at an elementary school open house was only half of what the principal had expected. If 103 people visited the school that evening, how many had she expected to attend?
A. 105 B. 206 C. 103 D. 205 E. 52.5 F. 309 G. 51.5
Mathematics
Factor.3x2 - 3x - 18
A. 3x2 - 3x - 18 B. 3(x + 2)(x - 3) C. (3x + 6)(x - 3) D. 3(x - 2)(x + 3)
Mathematics
Solve by transforming the augmented matrix into row echelon form.
A. (2, 7, 5) B. no solution C. (2, 5, 7) D. (-2, 7, 4)
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics