What is the major drawback in using algorithms with large complicated problems?

Which graph corresponds to the function f(x) = x2 + 4x – 1?

Which number line correctly shows 0.8 + 0.3?

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?