Answer:
4
Step-by-step explanation:
If f(x)= 108-kx, then all you have to do is plug in the given value of x which is -4, then equal it to the given value of 124.

Answer:
11
Step-by-step explanation:please mark brainliest
Pictures listed in order... from A-C
The correct answer is 541.2 to be exact
Answer:
49:21 reduces to 7:3 42:54 reduces to 7:9
Step-by-step explanation:
1) find the greatest common factor between each set of numbers
2) divide the numbers by the GCF you found for each set,