The expression 2x + 50 represents the elevation above sea level, in meters, of a rock climber after x minutes of climbing. what is the rock climber's initial height above sea level?

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.