During a certain seven-year period, the consumer price index (cpi) increased by
60%, but during the next 7-year period, it increased by only 50%. which of
these conditions must have existed during the second 7-year period?

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.

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