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OpenStudy (anonymous):
Evaluate the expression 4 × z + 12 when z = 15.
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OpenStudy (anonymous):
72
OpenStudy (anonymous):
\[4 \times z + 12\] Since z = 15, we can substitute z for 15. \[4\times 15 + 12\] \[60 + 15\] \[72\]
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