Answer:
I got -3+11x
Step-by-step explanation:
-3(1-3x)+2x
-3+9x+2x
-3+11x
Answer:
$1,344,300
Step-by-step explanation:
The difference on a yearly basis is ...
$80,000 -35,190 = $44,810
Over 30 years, that difference adds up to ...
$44,810 × 30 = $1,344,300
Answer:
C
Step-by-step explanation:
Answer:
The margin of error at 90% confidence is 0.5133 gram.
Step-by-step explanation:
Margin of error (E) = (critical value × sample standard deviation) ÷ sqrt(n)
sample standard deviation = 1.5 grams
confidence level = 90% = 0.9
significance level = 1 - C = 1 - 0.9 = 0.1 = 10%
n (sample size) = 25
degree of freedom = n - 1 = 25 - 1 = 24
critical value (t) corresponding to 24 degrees of freedom and 10% significance level is 1.711
E = (1.711×1.5) ÷ sqrt(25) = 2.5665 ÷ 5 = 0.5133 gram
