Find the quotient.7.5 ÷ 25
A. 1.3
B. 0.3
C. -13
D. 3
Answer: B
Mathematics
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Tell whether the graph opens upward or downward and whether the graph is wider, narrower, or the same as f(x) = x2.f(x) = -3x2
A. Upward, wider B. Downward, narrower C. Upward, narrower D. Downward, wider
Mathematics
Find the nth term and the indicated term of the arithmetic sequence {an} whose initial term, a, and common difference, d, are given.a1 = 
; d = 
an = ?; a21 = ?
A. an = 
n + 
; a21 = 22
B. an = 
n; a21 = 21
C. an = - 
n; a21 = - 21
D. an = 
n - 
; a21 = 20
Mathematics
Express the set in simplest interval form.(-2, 6] ? (0, ?)
A. (0, 6] B. [0, 6] C. (-2, 6] D. (-2, ?)
Mathematics
Use the laws of logarithms to expand the expression.
Mathematics