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Question:

If \(y=3ab+2 b^3 \) , what is y when a = 1 and b = 2?

A 22
explanation

Substitute the given values for a and b into the equation and then evaluate to find y: \(y=3ab+2 b^3 \)
\(y=3 \times 1 \times 2+2 \times 2^3 \)
y = 6 + 2(8)
y = 6 + 16
y = 22.