The first option is

The second option is

So, neither of them is equivalent to 
I would say 2/5 chance since 1 is neither prime or composite
She will have 6 braces left over since 8x8=64 and 70-64=6
Answer:
7) a = 65; b = 50
8) c = 125; d = 55; e = 52
9) f = 105
Step-by-step explanation:
7)
a = 65
b + 130 = 180
b = 50
8)
c = 125
d + 125 = 180
d = 55
e = 52
9)
(180 - f) + 32 + (180 - 107) = 180
180 - f + 32 + 180 - 107 = 180
-f + 285 = 180
-f = -105
f = 105