Someone explain why 1+1=2 in simple terms

F(x) = (x^2 + 3x − 4) and g (x) = (x+4) find f/g and state the domain.

On a piece of paper graph f(x)=5•(0.4)^x

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?