The cost of shipping a package is $4.75 for up to 1 pound, $8.75 for up to 2 pounds, $12.50 for up to 3 pounds, and $15.75 for up to 4 pounds. determine whether the cost is proportional to the weight of the package. explain your reasoning.

There are 12 boy and13 girls in a class. if the teacher randomly chooses a student’s name out of a hat what is the probability it will be a girl

What other information do you need to prove triangle dac=bca by asa

Apassenger train and a freight train leave san jose at 3pm, traveling in the same direction. the passenger train is going three times as fast as the freight train. at 6pm they are 240 miles apart. how fast is each travelling? explain your answer and show your