2w+w+2w+w=42 I don't understand how to get the answer

Greg practice playing his clarinet for 12 minutes. He has practice 40% of the amount of time he needs to practice today. How many more minutes does Greg needs to practice today.

Solve each system by elimination -4x+y=-10 6x-y=16

If $450 is invested for one year at 55 % simple interest, how much interest is earned? The simple interest is $

Solve for x in the equation x - 4 = 7.

In a recent survey, 0.4 of the people surveyed said their favorite beverage was coffee, 25 % said it was hot tea, andsaid it was millk 10 Which food was beverage by the greatest number of people?

Gary unpaid credit card balance is $2543.32. His APR is 17.4%, and he made one new transaction for $320. What is his new balance? A: $2900.20 B: $3020.46 C:$3305.86 D:$3442.34

How do you solve 840 - 56

Tony has 37 block then he buys more blocks now he has 51 blocks. How many blocks does Tony buy

A firkin is an old British unit of volume equal to 9 gallons. How many cubic meters are there in 6.00 firkins?

The procedures can also be called the methods