If k times x is equal to 5 x minus 6 , which expression is equivalent to open paren k plus k close paren times 4 ?
A
5 times open paren 5 times 4 minus 6 close paren minus 6B
5 times 4 minus 6 plus 5 times 4 minus 6C
5 times open paren 4 plus 4 close paren minus 6D
54 minus 6 plus 54 minus 6The rule is k(x) = 5x − 6. Evaluating (k + k) at 4 means adding k(4) to k(4), so the expression is (5 × 4 − 6) + (5 × 4 − 6). That matches choice D.
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