210 - ( 30 * x )
**I assume the question asks for total minutes.
Answer:
11
Step-by-step explanation:
Ummmmmmmmmmmmmmmmmmmmmmmmmmmmm im sorry I don’t know but I’m guessing u add the first and add second and subtract the 11 the first and 31 second then u use that and subtract and see if it negative or positive and mark it on the dot
Answer:
4
Step-by-step explanation:
Answer:
8 years old
Step-by-step explanation:
oldest= 16
8+12+15+16= 51
51/4 = 12.73 ( average)