Answer:
B
Step-by-step explanation:
This is a neat question
f(x) - g(x) = 2x Add g(x) to both sides
f(x) = g(x) + 2x
Now you need the right hand side to have 20 added to g(x).
2x must = 20
2x = 20 Divide by 2
x = 20/2
x = 10
So the answer must be x = 10
Answer:
21
Step-by-step explanation:
Time taken to ride 1 mile=7 min.
So time taken to ride 4 mile=4×7=28min.
Answer:
42 I think
Step-by-step explanation: