Find the least number between 200 and 500 which leaves a reminder of 3 in each case when divide by 8,10,12 and 30

Alocal concert promoter purchases 2 3/4 pages of ads. when one of the concerts is cancelled, the promoter cancels 1 5/8 pages of ads. how much advertising space is the concert promoter actually using?

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

The square root of 9x plus 7 plus the square rot of 2x equall to 7