Justify each step in solving the system of equations.

3x−2y=12x+2y=4
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Addition Property of Equality
Multiplication Property of Equality
Substitution Property of Equality
Subtraction Property of Equality
Division Property of Equality
5x=5

x=1

3(1)−2y=1

−2y=−2

y=1

Is it true that product of 3 consecutive natural numbers is always divisible by 6? justifyyour answer

Which value would be a solution for x in the inequality 47-4x< 7

Someone answer asap for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =