Please help i'm really stuck on this! thank you :)

Jacks bank statement shows an account balance of -$25.50. which describes the magnitude, of size, of the debt in dollars

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.