Really need help I’ll mark branliest

Leo has b boxes of pencils. each box contains 6 pencils. he has a total of 42 pencils. the equation that represents this situation the value of b that makes the equation true the first one is b+6=42,6b=42,b=42+6,or 42b=6 the second one are 7,836 48

43lbs of tomatos cost $387. how much would 41lbs cost

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry