Bruce drives his car for his job. the equation r=0.575m+42 models the relation between the amount in dollars. r, that he is reimbursed and the number of miles, m, he drives in one day. interpret the slope of the equation.

Hannah is 3 years older than twice her brother joey’s age. joey is 2 years old. how old is hannah? show all of your work! the number of students is five more than seven times the number of teachers. there are 10 teachers. how many students are there? be sure to show all of your work!

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.

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?