The number of trees in a rainforest decreases each month by 0.5%. The forest currently has 2.5 billion trees. Write an expression to represent how many trees will be left in 10 years. Then, evaluate the expression.

An expression would be 10(12)-0.005 - 2.5 billion.

Step-by-step explanation:

You can use this expression because if you were to find this problem you would do 10 times 12 because there are 12 months in a year, and the question is talking about 10 years, and then we know that the number of trees decreases by 0.5% , and the forest currently has 2.5 billion trees. Also you can't have a percent into an equation, so I converted it into a decimal by moving the decimal point over to the left twice.

I hope this helps out this is a pretty tricky problem, I tried my best. :)

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

30005

yes ok