Answer:
x = -7
Step-by-step explanation:
2x+6 = x-1
add -6 to both sides
2x = x-7
add -x to both sides
x = -7
509 ÷ 13 = 36.36
There are about 36 floors.
Answer: 36 floors.
Let x = speed and y = distance
y = x * 45
y = (x - 4) * 70
45x = 70x - 280
-25x = -280
x = 11.2
Put it back into the first equation:
y = 11.2 x 45
y = 504miles
Hope this helps! Any questions let me know :)
Let x be the number of square feet to be mowed
215 square feet take 22 minutes
x square feet take 12 minutes