Krishna has $4.90 with a combined 34 nickels and quarters. How many of
each coin does she have?

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis. y = 7ex, y = 7e^-x, x = 1; about the y-axis

The john nash mall used 17,4000 kilowatt hours in may, with a peak load of 92 kilowatts. the demand charge is $5.95 per kilowatt, and the energy charge is $0.08 per kilowatt hour. the fuel adjustment charge is $0.017 per kilowatt hour. what is the total electricity cost for may?

Sarah needs 3 feet of fabric for a project she is working on, but the store only sells the fabric in meters. one meter of fabric costs $1.20. how much will the fabric cost?