Shana bought sodas and popcorn for the movies. sodas cost $3 each and popcorn cost $4 per bag . shana bought 7vthings from the concession, all either sodas or bags of popcorn. shana spent a total of $26 . write a system of equations involving the number of sodas, s and the bags of popcorn, b .solve the system to see how many of each shana bought.

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point