There are white blue and red boats at the marina. Two-thirds of the boats in the marina are white, 4/7 of the remaining boats are blue. And the rest are red. If there are 15 red boats, how many boats are in the Marina?

Find the given elements if matrix d:

Three times the sum of a number and seven is negative thirty-six. what is the number?

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?