Provide an appropriate response.Rewrite the following equation, replacing the sum on the left side with a summation.1 + 2 + 3 + 4 + ... + n = 
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Use divisibility tests to decide whether the first number is divisible by the second. 648,542; 9
A. Yes B. No
Mathematics
Evaluate the exponential function at the specified value of x.f(x) = 243x, x = -0.2
A. 9
B. 
C. -3
D. 3
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression.
A. 
B. 4x
C. 
D. x 
Mathematics