Las calorías y joules en física son unidades de energía a demás se sabe que una caloría equivale a 21/5 joules

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.

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18

What is the effect on the graph of the function f(x) = x2 when f(x) is changed to f(x) − 4?