In 15 and 16, use the table of survey results from a Eason sample of people about the way they prefer to view movies. 15. Lindsay infers that out of 400 people, 300 wold prefer to watch movies in a theater. Is her inference valid? Explain.

16. Which inferences are valid? Select all that apply.
◼️ Going to a theater is the most popular way to watch a movie.
◼️ About twice as many people would prefer to stream movies instead of watching in a theater.
◼️ About 3 times as many people would prefer to watch a movie on DVD instead of watching in a theater.
◼️ About 8 times as many people would prefer to watch on movie on DVD instead of streaming.
◼️ Most people would prefer streaming over any other method.

25.2

step-by-step explanation:

2+4x6-8/10= 25.2

details

step-by-step explanation:

24/56=hx^7

step-by-step explanation:

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places