Hey help with this three questions. Please include all steps. Make it clear so that I understand ?Urgent please

In Thousands of dollars per widget, a manufacturer estimates that its marginal cost to produce s C widgets is given by ( (c ) = act1 , while its marginal revenue is given by (20) = - 202+120+2 Determine the total profit if 10 widgets are sold Evaluate the allowing Integrals , show all work . leave your ansafer for ( a ) as a simplified excat number, not as a decimal a b ) ( In 4 x) 3 DC 3 kihat is the linearization " ( ) of of (20 ) = Vitzc a b) Rounded to 4 decimal places, determine Ite error in ssing the linear approximation from part (a ) to evaluate f at x = 0104. # 3 has two park a and b)