Some number is added to itself the result is multiplied by eight is four what is that number

Which of the following values are in the range of the function graphed below? check all that apply ! - will give the answer "brainliest! "

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?

What are the intercepts of x^2+y-9=0