Answer:
x = 14
Step-by-step explanation:
X / 2 = 7
Multiply by 2 to isolate x.
x = 7 * 2
x = 14
She underestimated by 60 cents. To get this answer all you need to do is multiply 1 dollar times 12 which is $12 and then multiply $.30 by 12 and that gives you $3.60. Then you add the $12 to the $3.60 and that gives you $15.60 which is 60 cents over the estimation.
Answer:
D
Step-by-step explanation:
A margin of error provides information on the percentage points ones results will differ from the real value.
If margin of error is 3% and estimated value is 6%, it means that the confidence interval would be within ±3 of the estimated value.
So, the confidence interval would be between 3% (6% - 3%) and 9% (6% + 3%)
288 divided by 12 = 24
240 divided by 10 = 24
