The margin of error is 0.97849
we are given
mean=235
so,

standard deviation =7.5
so,

we know that
ME=2*standard error
and

If confidence level is 95%, then we can multiply by 1.96
so, we can multiply by 2 to get ME
now, we can use marginal error formula

now, we can plug values
and we get


Alright, so Ron parked his car for 8 hours at $3 per hour.
Harry parked his car for 7 hours at $3 per hour.
So, per day Ron is spending (8 * 3) = $24 a day
and Harry is spending ( 7 * 3 ) = $21 a day
So now solve for 5 days. 24 * 5 = $120 21 * 5 = $105
Add both together
$120
+
$105
=
Your Answer:
$225 altogether.
Let's solve the next equation:

We need to find the value for c, this value is correct when we replaced it with a number and the equality equation becomes true.
First, subtract both sides by 6


Now, subtract both sides by 8


Replacing the c value to verify:


The c value is correct.