Answer:
Step-by-step explanation:
3(-5+2x)=21
-15+6x=21 -5*3 is -15
6x=36
x=6
Answer: 3 hours
Step-by-step explanation:
The span between -12.5 and -5 is 7.5. Divide that by 2.5 (since that’s the change) and that’ll give you the amount of time it takes.
Answer:
6
Step-by-step explanation: