Answer:
69x+11
Step-by-step explanation:
First you distribute-3 to -4y and 3 leaving you with 12y+(-9)+7y. Now combine like terms, so your answer is 19y-9
It's a mistake to say that the area under the standard normal curve associated with a z score of 3 is 0. That area is actually slightly less than 1.
Using a old but good calculator with statistical functions:
normalcdf(-100, +3) = 0.999
The answer to your question is 4×7=28