Simplify (4b+15-7k)-(6-4b+2k)

Jackson drew 4 hearts and 29 circles. what is the ratio of circles to all shapes?

Match each function with its rate of growth or decay

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.