Solve for the variable in the following proportion. 5/25 = m/125

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

If you could answer these your a life saver

Cesar bought 7 items at the candy store. he bought candy bars for $0.50 each and packs of gum for $0.95 each. he spent a total of $6.80. what system represents the solution for the number of candy bars (x) and the number of pack gum (y) purchased?