35 POINTS!!!!!
 David has a job transporting soft drinks by truck. His truck is filled with cans that weigh 
 14
 ounces each and bottles that weigh 
 70
 ounces each. There is a combined total of 
 930
 cans and bottles in his truck.
 Let 
 x
 be the number of 
 14
 -ounce cans in his truck. Write an expression for the combined total weight (in ounces) of the cans and bottles in his truck.