What is the surface area of this triangular prism rounded to the nearest tenth?

Which expression is equivalent to 2x^2+7x+4?

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

What does x = in this equation x+3+2x=x+5