Question

evaluate the expression when a=2 and x=-3. a - 9x

Explanation:

Step1: Substitute given values

Substitute $a=2$, $x=-3$ into $a-9x$:
$2 - 9(-3)$

Step2: Calculate the multiplication

Compute $9(-3)$ first:
$2 - (-27) = 2 + 27$

Step3: Compute the final sum

Add the two terms:
$2 + 27 = 29$

Answer:

29