Hello, I could use some help with the following. Please express answers clearly

A company's marginal cost function is MC(x) (given below), where x is the number of units. Find the total cost of the first hundred units (x = 0 to x = 100). (Round your answer to the nearest cent.) MC(x) = 7e-0.02x $ X Need Help? Read ItWorld consumption of a certain metal is running at the rate of 325e." thousand metric tons per year, where t is measured in years and t = 0 corresponds to 2014. Find the total consumption of the metal from 2014 to 2025. (Round your answer to the nearest whole number.) thousand metric tons Need Help? Read ItFind the sum of the areas of the shaded rectangles under the graph. Round to two decimal places. [Hint: The width of each rectangle is the difference between the x-values at its base. The height of each rectangle is the height of the curve at the left edge of the rectangle.] y= X I W 4 2 X 1 1.25 1.5 1.75 2 Ci 2.5 x square units Need Help? Read It Watch It Master It