Find half of seven and three-fourths

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant. given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.