Which of the following mathematical symbols represents "the opposite of"?

30 is 6 multiplied by a number y as a equation

How much is $1200 worth at the end of1 year,if the interest rate is 5.5% is compounded quarterly.

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the given curves about y = 8.8y = x3, y = 0, x = 4use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the given curves about y = 8.8y = x3, y = 0, x = 4