The lifetimes of a certain type of light bulbs follow a normal distribution. if 4% of the bulbs have lives exceeding 445 hours, and 40% have lives exceeding 361 hours, what are the mean and standard deviation of the lifetimes of this particular type of light bulbs? round your answer to the nearest integer.

Which of the points a(6, 2), b(0, 0), c(3, 2), d(−12, 8), e(−12, −8) belong to the graph of direct variation y= 2/3 x?

Atransformation t : (x, y) (x-5,y +3) the image of a(2,-1) is

The temperature of a chemical solution is originally 21 ? c . a chemist heats the solution at a constant rate, and the temperature of the solution 75 ? c after 1212 12 minutes of heating. the temperature, tt t , of the solution in ? c is a function of x , the heating time in minutes. write the function's formula.