F(5)=12 in a geometric sequence. recursive formula is f(n)=0.3xf(n-1). n> 0. find f(7)

With finding limits of multi variable !

The box plots show the average speeds, in miles per hour, for the race cars in two different races. which correctly describes the consistency of the speeds of the cars in the two races?

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