PLS ANSWER THESE QUESTIONS!! I ONLY HAVE TEN MINUTES LEFT! NO LINKS PLZ!!! ( I will give 40 points f u get these correct )

Customers at an ice-cream shop took a survey .the results showed that 144 customers rated the shop as being "very satisfactory ."this number represented 45%of the total nunber of customers who took the survey

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?