Which expression can be used to find the difference of the polynomials?
(4m – 5) – (6m – 7 + 2n)

a. (4m – 5) + (6m + 7 + 2n)
b. (4m – 5) + (–6m + 7 + 2n)
c. (4m – 5) + (–6m – 7 – 2n)
d. (4m – 5) + (–6m + 7 – 2n)

Can u guys do this ratio question. this is extremely urgent a tap is leaking water at a rage of 1l every 8 hours. how long will it take for the tap to leak a total of 300ml?

When a 757 passenger jet begins its descent to the ronald reagan national airport in washington, d. c., it is 3900 feet from the ground. its angle of descent is 6 degrees. how far must the plane fly to reach the run way? a. 37,106 ft b. 37,310.4 ft c. 23,456.6 ft d 2,492.7 ft

Is the number 128.439 a rational number