Given the equation
2x + 5y = 7,
answer the following questions.
(a) is the slope of the line described by this equation positive or negative?
positive
negative

(b) as x increases in value, does y increase or decrease?
increase
decrease

(c) if x decreases by 5 units, what is the corresponding change in y?

Television viewing reached a new high when the global information and measurement company reported a mean daily viewing time of 8.35 hours per household. use a normal probability distribution with a standard deviation of 2.5 hours to answer the following questions about daily television viewing per household. a. what is the probability that a household views television between 4 and 10 hours a day? (to 4 decimals) b. how many hours of television viewing must a household have in order to be in the top 7% of all television viewing household? (to 2 decimals) c. what is the probability that a household views television more than 4 hours a day? (to 4 decimals)