Randi worked 12 hours more than Joel. Randi worked 42 hours. which equations can be used to find the number of hours Joel worked?

At school there are 526 students and 263 are girls about how likely is it that a randomly chosen student will be a boy

Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial

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?