N=2p
(n+7) + (p+7) = 68
2p + 7 + p + 7 = 68
3p + 14 = 68
3p = 68 - 14 = 54
p=54/3=18
n=2p=36
Check: (18+7)+(36+7)=25+43=68 good
Answer:
The company decided to increase the price by $9.60, or by 48%.
Step-by-step explanation:
To measure the price difference in dollars is simple, just subtract the old price from the new one:

Divide the price change by the old price to find the price increase in percentage:

Answer:
One-way ANOVA
Step-by-step explanation:
One-way ANOVA(analysis of variance) a testing method in statistics that is used to compare the means of two or more independent samples, to check if the differences are statistically significant.
In this case, we have three groups which their various reaction time to caffeine is to be tested using the same testing method (amount of caffeine). Hence the appropriate test to use here is the one-way ANOVA
Answer:
Part 1) The value of y=6
Part 2) ED=36, DB=36 and EB=72
Step-by-step explanation:
In this problem we know that
ED=DB -----> equation A
EB=ED+DB -----> equation B
The point D is the midpoint ED
see the attached figure to better understand the problem
step 1
Find the value of y
Substitute the given values in the equation A

solve for y



step 2
Find the value of ED,DB and EB

substitute the value of y

Remember that
ED=DB
therefore

Find the value of EB
EB=ED+DB

AB=1.5 m = 150 cm
BC=AB-AC
BC=150-4.4=145.6 cm = 1.456 m