You want to figure out the relationship between -3 and -8. the simplest one is subtraction: -3 - 5 = -8
your x value, -3, minus 5 equals -8, your y value
so the rule for this is x - 5 = y
Answer:
16
Step-by-step explanation:

Subtract Harmony Trail from Mountain Trail so 844-528=316
81
(-9)(-9) is 81
Multiplying two negatives gives a positive