If A is 1/3 of B then A = 1/4 the sum of A and B. 1/4 times 48 = 12
Coin A = $12
Coin B = $48 - $12 = $36
Answer: D, using rise over run the graph goes up 1 over 3 and the graph crosses the y-axis at -4 put that in y=mx+b and you get y=1/3x+-4
Quadrants are only quadrant 1 and 4
Answer:

Step-by-step explanation:
and 

Step 1
Given; If Body temperatures of healthy adults have a bell-shaped distribution with a mean of 98.20°F and a standard deviation of 0.93°F.
Using the empirical rule, what is the approximate percentage of healthy adults with body temperatures between 96.34°F and 100.06°F?
Step 2