Please solve this?

drilling becomes more expensive, per meter, as ' The marginal cost of drilling an oil well depends on the depth at which you are drilling; Arabia), and, if x is the depth you dig deeper into the earth. The xed costs are 1,000,000 rivals (the riyal is the unit of currency of Saudi in meters, the marginal costs are C' (x) = 1000 + 18x rivals/meter. Find the total cost of drilling a 700meter well. Do not use commas in your submitted answer. The costis I riyals