Acertain elevator has a maximum weight capacity of 1,000 kilograms. ten people weighing a total of 7,000 hectograms get on the elevator. how much more weight can the elevator hold before it reaches its maximum capacity? in hectograms

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?