5 - 1.25 = 3.75
Melody’s mom pays her sister $3.75 for emptying the dishwasher.
Answer:
Approximately 76.5 mg.
Step-by-step explanation:
Given,
The initial quantity of the Bismuth-210, P = 233 mg,
Also, the rate of decay per day, r = 13 %
Thus, the quantity of the Bismuth-210 after 8 days would be,






Answer:
B
Step-by-step explanation:
Assume both their ages are 
One is 3 years older than the other, and the sum of their ages add up to 19
