11to the power of 3 multiply by 21 to the power of three

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis.y = 7ex, y = 7e^-x, x = 1; about the y-axis

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.

Which number completes the system of linear inequalities represented by the graph? y > 2x – 2 and x + 4y >