we are supposed to explain
Which situation could be solved using the equation 
As we can see in the given equation , one number is -4 and the other number is 4
When we add two number of same value but opposite in sign we get zero.
This equivalent to the real life situation of paying a post paid bills.
Suppose you are using a post paid service , and the bills gets generated at the end of the month.
Suppose the bills amount is $x.
Once you pay that bills , then total outstanding again becomes $0.
Because 
This cannot be expressed as an answer but the expression for that is 3L-5
1) 135 2) 119.40 if you still need the rest reply back to this answer
Answer:
f(-5) = 19
Step-by-step explanation:
Missing and incorrect;
f(x) = −3x + 4
x = −5
Find:
Solution of f(x)
Computation:
f(x) = −3x + 4
f(-5) = −3(-5) + 4
f(-5) = 15 + 4
f(-5) = 19
The student simplified wrong because when he brought a to the numerator, he forgot to change the sign of the exponent. Instead of getting a^2 in the numerator (by adding 4 + -2), he should have gotten a^6 (by adding 4 + 2)