Factor 28 and 49
28
1*14
1*2*7
49
7*7
7 is the answer
Answer:
y=1.8x+32
Step-by-step explanation:
212-32=180
100-0=100
180/100=1.8
y=1.8x+b
212=1.8(100)=b
212=180+b
212-180=32
b=32
Answer:(b), (c)
Step-by-step explanation:
Given angle is 
Coterminal angles are those which shares same staring side and terminating side
The coterminal of given angle is

Negative coterminal angle


Thus option (b) and (c) are correct
I mean, I don't know how to explain a generic way to solve this. Ask me about the specific train of thought if you are interested:
7 * 18 + 45 / 3 - 2 = 139