What is 3√45 + 2√ 80−−

question 7 options:

12√ 5

7√ 5

17√5

5√5

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?

Use the distributive law to multiply. 3(4x + 5y + 6)

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76