If 10 cakes cost $30 then, what would be the cost of 25 cakes? Please help

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

How do you find the distance of each number from the mean

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is