Answer
$300$
Work Step by Step
To evaluate $155-2(17+3)+185$ using a scientific calculator, press the following keys in the specified order:
Press $\boxed{1} \quad \boxed{5} \quad \boxed{5} \quad \boxed{-} \quad \boxed{2} \quad \boxed{\times} \quad \boxed{(} \quad \boxed{1} \quad \boxed{7} \quad \boxed{+} \quad \boxed{3} \quad \boxed{)} \quad \boxed{+} \quad \boxed{1} \quad \boxed{8} \quad \boxed{5}\\
\text{ then} \quad \boxed{=} \text{ or } \boxed{\text{ENTER}}$
to obtain:
$$155-2(17+3)+185=300$$
