a contractor bought 8.2 ft^2 of sheet metal. she has used 3.5 ft^2 so far and has $94 worth of sheet metal remaining. the equation 8.2x-3.5x=94 represents how much sheet metal is remaining and the cost of the remaining amount. how much does sheet metal cost per square foot?

Which addition property is being illustrated below? (type commutative or associative) (6 + 7) + 1 = 6 + (7 + 1)

Mexico city, mexico, is the world's second largest metropolis and is also one of its fastest-growing cities with a projected growth rate of 3.2% per year. its population in 1991 was 20,899,000 people. use the formula p = 20.899e0.032t to predict its population p in millions with t equal to the number of years after 1991. what is the predicted population to the nearest thousand of mexico city for the year 2010?

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?