Which value for x makes the sentence true?

D

Step-by-step explanation:

Given

- + x =

Add to both sides

x = +

Before adding the fractions we require them to have a common denominator

Multiply the numerator/ denominator of the first fraction by 5 and

Multiply the numerator/ denominator of the second fraction by 3

x = +

  = +

Now add the numerators leaving the denominator

x = = → D

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

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