The answer is B.
Explanation:
240-18
= 222
222-18
= 204
204-18
= 186
A unit cost<span> is the total expenditure incurred by a company to produce, store and sell one </span>unit<span> of a particular product or service. </span>Unit costs<span> include all fixed </span>costs<span>, or overhead </span>costs<span>, and all variable </span>costs<span>, or direct material </span>costs<span> and direct labor </span>costs<span>, involved in production.</span>
This is easy just find out what 5^2 equals which will be 5x5=25 (when dealing with a squared number you will always times it by itself. so if you had 10^2 it would be 100.) so now that we know 5^2 is 25 we then can add the 20 which gets 25+20=45! Hope this helps!