How can the sum from n is equal to 1 to 25 of 42 be rewritten?
Answer
A
42 times 25
B
open paren 1 times 42 close paren plus open paren 25 times 42 close paren
C
open paren 1 times 42 close paren times open paren 25 times 42 close paren
D
42 times open paren 25 minus 1 close paren
Explanation
The sum adds 42 once for each integer from 1 through 25, so there are 25 terms. A constant added 25 times is 25 × 42, which is choice A, “42 times 25.”
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