Answer:
x=2
Step-by-step explanation:
9x+9=25+x
9x-x=25-9
8x=16
x=2
Answer: The proportion that will qualify is 0.0314 or 3.14%.
First, we need to find the z-score of a time of 128 seconds. To do this, we find the difference of the mean and score and divide by the standard deviation.
(128 - 141) / 7 = -1.86
Now, use a standard normal distribution table to determine the percent below a z-score of -1.86. That value is 0.0314 or 3.14%.
A=p(1-r)^n
A=24,000×(1−0.09)^(5)
A=14,976.77
Answer:
<em><u>$4.59</u></em> would be a good estimate for the dessert with 10% tax.
Step-by-step explanation:
10% = 0.10
0.10 + 4.49
