What is the slope of the line −4x+7=2y−3

Why did the ice arena get so hot after the big game (this is math related google it to find the paper

Factor the polynomial by its greatest common monomial factor.

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!