How do I solve 3x-7y=63 and 4x+3y=-27by addition?

The telephone rates between your city and the city where your brother lives are $.54 for the first minute and $.22 for each additional minute. Calculate the cost of a 10-minute call to your brother.

Which equation has a graph parallel to the graph of 7x=14y-8 A y=-2x-7 B y=-1/2x+4 C y=1/2x+1 D y=2x+9

Alex lights a candle every 10 minutes. Each candle burns for 40 minutes and then goes out. How many candles are alight 55 minutes after Alex lit the first candle? Show the solution.

How many zeros will be in the product 7x5,000 without calculating the answer explain how to use the Associative Property to find the number of zeros in the product.

What is the factor y^2-11y+18

7 rectangles in every 140 cm. how many rectangles will be presented in 220 cm

Which graph represents the solution set of this inequality? 9-4d≥-3

How many $10 bills are the same as ten $1 bills

What is the sum of the arithmetic series below? Use the formula for the sum of an arithmetic series. 18 ∑ 2i-9 i=1

What is the value of x? 3x-8=8x+4/2