a submarine took 9 hours to complete a journey. For the first 5 hours, it traveled at an average speed of 106 km/h. For the rest of the journey, it traveled at an average speed of 125km/h. what was the total distance of the journey?

Which ordered pair (c, d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size. it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?