25=-6x+5y 2x-5=y solve by substitution

The average human heart beats 72 beats per minute. how many times does it beat in 15 seconds?

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coup?