Can someone please help me with this ASAP

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?