Step-by-step explanation:
I'm guessing
second one
removing some of the sentences
Answer:
20'C
Step-by-step explanation:
50-30= 20
The answer would be
.Because

= 0.25
And

is also equal to 0.25.
And that makes it a proportion.
Hope this helped! c:
Answer:
D
Step-by-step explanation:
Exponential equation takes the form
where
a is the initial value ( a ≠ 0), and
b is the base ( b ≠ 1)
The equation given can be written as
. Thus, it is an exponential equation.
So a = 1 and b = 3.1
Thus we can say that the initial value = 1 and the base is 3.3