I = / r where I = current and r = resistance
80 = k / 50 so
k = 400
so we have I = 400/r
when r = 40
I = 400/40 = 10 amps
The formula for simple interest is:


We are going to convert the percent (12) into a decimal.

Then, we are going to put the months into years.

Let's plug in the values:

The total amount paid for the trip is $180.81Have a nice day! :)
Answer:
-33
Step-by-step explanation:
Plug it in;
f(7)= -5(7)+2
-5(7)= -35+2= -33
$54 towe my friend degrees