Suppose sarah $12 left on her gift card. how would this change the equation and the final answer?

What is the inverse of the function f(x)=4x+8

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?