Hannah's test grades were 80, 85, 75, and 92. what is her weighted average if the test grades were weighted 2, 4, 3, and 2, in that order

Describe a pattern in each sequence what are the next two terms of each sequence -5, 5, -5, 5 a. subtract 10 from the previous term; -5,5 b. multiply the previous term by 1; 5, 5 c. add 10 to the previous term; -5, -15 d. multiply the previous term by -1; -5, 5