-220+18z represents a submarine that began at depth of 220 feet below sea level and ascended at a rate of 18 feet what was the depth at 5 min

130 feet below sea level, or -130 feet

Step-by-step explanation:

Assuming you meant 18 ft per minute, it will have rose 90 feet in five minutes, 18*5=90

-220+90=-130

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

i believe it's a.

i'm not sure on this one, most likely correct.