PLEA HELPPP

whats 3.8 = x -3.4

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.

Eiko is wearing a magic ring that increases the power of her healing spell by 30%30\%30%30, percent. without the ring, her healing spell restores health points. which of the following expressions could represent how many health points the spell restores when eiko is wearing the magic ring?