PLLZZ HELP ME OUT WITH THIS 1. A driver’s elevation is -30 feet relative to sea level. She dives down 12 feet. What is the elevation after the dive?Show your work. (20 points)

2. Explain(In your own word) how to model -5+5+(-2) on the number line. (20 points)

3. How do you subtract an integer from another integer without using a number line ? Give an example. (20 points)

4.Solve following problems(Show your work for subtraction):(40 points)

(-1)+(-5)= b) (-1)+(9)= c)1-(-2)=

d) 19-(-19)= e) -87-(-87) f) 0-(-5)=

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x

Given the net of the rectangular prism, what is its surface area?

Exclude leap years from the following calculations. (a) compute the probability that a randomly selected person does not have a birthday on october 4. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability that a randomly selected person does not have a birthday on the 1st day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability that a randomly selected person does not have a birthday on the 30th day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (d) compute the probability that a randomly selected person was not born in january. (type an integer or a decimal rounded to three decimal places as needed.)