can you please help me with these step by step in 20 minute please if you can

Q1 (5 points) A small business owner calculates that the per-unit cost C of producing x hundreds of doll houses is modelled by the function x2 C)=1-> _ (%) 2x3 + 27 where C is in hundreds of dollars. How many doll houses does the company need to produce to minimize the per-unit cost? What is the minimum per-unit cost? Q3 (5 points) Find an equation of the tangent line to the given curve at the point (0, 1/7). sin(x? + y?) = xe\