A.
PEMDAS
Parenthesis always comes first, then exponents, multiplication and division, adding and subtracting
3 ft = 12 * 3 = 36 inches wide
36 / (3/4) =
36 * 4/3 =
144/3 =
48 books can fit
If its 20 more than last month that means x + $20 = $70, solve that and you get x = $50, last month she saved $50
Answer:
Step-by-step explanation:
Hmm
let's try some numbers
we have 3 scenarios
x>y
x=y
x<y
x>y
x=-1 and y=-2
x-y=-1-(-2)=-1+2=1
it's positive when x>y
x=y
x=-1, y=-1
-1-(-1)=-1+1=0
nope
x<y
x=-2 and y=-1
-2-(-1)=-2+1=-1
nope
x-y is positive when 0>x>y
