Answer:
k= -1
Step-by-step explanation:
To find k, use the points and the m =-7 in the slope formula:

Answer: 20 feet
Step-by-step explanation:
This represents a right angled triangle with the length of the slide being the hypotenuse, the height of the ladder being the height of the triangle and the distance from the base of the ladder being the length.
Solve with Pythagoras rule:
c² = a² + b²
c = hypotenuse
a= length
b = height
29² = 21² + b²
841 = 441 + b²
b² = 841 - 441
b² = 400
b = √400
b = 20 feet
The answer is B.
I hope this helps!
The second graph because 2x5=10, 4x5=20, 6x5=30!
In 2009 the company made thirty-eight million five hundred thousand dollars