F(x)=3x^2+4x-3 what is f(-x)

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with