For a walk-a-thon a sponsor committed to give you a flat fec of $5 plus $2 for every mile m you walk. is) a. Write an expression for the total amount you will collect from your sponsor at the end of the walk-a-thon. b. Then evaluate your expression for 20 miles walked.

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

There are 93 calories in a small candy bar how many calories are ther in a half dozen small candy bars?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $36.98. find the probability that a randomly selected bill will have an amount greater than $173, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?