Last year there were 30 people in the school choir. This year there are 25 people in the choir. By what percent did the choir membership decrease? Step by step explanation please

Are carpet coast $15 per square metre. the total delivery charge is $21 peter buys n squared metres of carpet what is the expression which represents the total cost in $

What is the solution set of the quadratic inequality x^2-5< or equal to 0

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?