Using the inverse function, it is found that the equation is:

It's initial value is 20.
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We want to find the inverse of:

To do this, we <u>exchange y and t, and isolate y.</u>
Then:








It's initial value is:

Rounding, 20.
A similar problem is given at brainly.com/question/23950969
Answer:
-5x/5 +5y/5=10/5=2
y-x=2
y=x+2
21x+7*(x+2)=42
21x+7x+14=42
28x=42-14
28x=28
x=1
y=1+2
y=3
Step-by-step explanation:
Answer:
6.47 x 10^-2
Step-by-step explanation: