The number of moviegoers who bought tickets for a summer blockbuster can be modeled by the equation , where w represents the number of weeks after the movie's release. Which of the following
statements is true?
f (w) = 9,250,000 (4/5)^w
А
There were 7,400,000 people who bought tickets to the movie the first week it was out.
B
There were 9,250,000 people who bought tickets to the movie the first week it was out.
С
Each week, there was an 80% increase in the number of people who bought tickets to the movie.
D
Each week, there was an 80% decrease in the number of people who bought tickets to the movie.

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step-by-step explanation:

the least common denominatore of 7 and 2 is 9

step-by-step explanation:

7+2=9

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

a

step-by-step explanation: