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i need the answers and explanation pls

You buy five cds at a sale for $5.95 each. write an expression for the total cost of the cds.then use the distributive property and mental math to evaluate the expression.

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.

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