A sum of money amount to Rs. 11910.16 in 1 1/2 years at 12% per annum interest being compounded semiannually. Find the sum please fast ?

Which statement is not always true for a parallelogram? (a) opposite sides are congruent. (b) diagonals bisect each other. (c) it has 4 congruent angles. (d) consecutive angles are supplementary.

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Can someone explain to me how to do