Answer:
f(x)=8x-25
Step-by-step explanation:
Our first expression is equal to zero:

So we simply find the expression that is equal to zero.
The final answer is a.
Answer:
90 hours of training would you need to pay
For this case we have:
: Let the variable representing the first odd number
: Let the variable representing the consecutive odd number at x.
According to the statement we have:

We found the solution by factoring:
We look for two numbers that, when multiplied, result in -63 and when added, result in 2. These numbers are +9 and -7.

Thus, we have:

Therefore the solutions are:

We choose the positive value, so we have:

Answer:
The largest number is 9