The question is a little blurry. I can't read it.
Answer:
Option A. -6.5
Step-by-step explanation:
we have

Solve for r
That means ---> isolate the variable r
Combine like terns left side of the equation

Divide by 0.5 both sides


Answer:
24%
Step-by-step explanation:
Taxes
t = 55000 - 41800
t = 13200
% tax
p = 13200/55000 * 100
p = 24%
Y+1=-1(x-3) is point slope formula
The standard deviation of the set is 5.2
To find standard deviation, we take the square root of the variance.