Luis's copy of Substitute a value into an expression

Question 1

Find the value of the following expressions, given the stated value of $n$.

$n=-\var{t}$

$-\var{a}-n$

$\displaystyle{}$ Expected answer: $\displaystyle{-9}$

Score: 0/1

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$-(n^2)$

$\displaystyle{}$ Expected answer: $\displaystyle{-9}$

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$n^3-\var{b}n$

$\displaystyle{}$ Expected answer:

$\displaystyle{-15}$

Score: 0/1

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