3 (x + 2) + 4(x - 5) = 10
Simplify.
3x + 6 + 4x - 20 = 10
Add like terms.
(3x+4x) + (6-20) = 10
Simplify.
7x - 14 = 10
Add 14 to both sides of the equation.
7x = 24
Divide both sides by 7 so that X is by itself.
x = 24/7, or 3 3/7
~Hope I helped!~
The z-statistic for Brett's data is found to be as given by: Option A: -5.30 (approx).
<h3>How to find the value of z-statistic for population mean?</h3>
Suppose we're specified that:
- The sample mean =

- The population mean =

- The population standard deviation =

- The sample size = n
Then the z-statistic for this data is found as:

For this case, we've got:
- The sample mean =
= 295 - The population mean =
= 310 - The population standard deviation =
= 20 - The sample size = n = 50
Thus, we get:

Thus, the z-statistic for Brett's data is found to be as given by: Option A: -5.30 (approx).
Learn more about z-statistic here:
brainly.com/question/1640298
With two dice, you can get sums of between 2 and 12,
The answer is A because it has or in the sentence