You pay no federal taxes up to $9,525, 12% for income from $9,526 up to $38,700, 22% for income from $38,701 up to $82,500. If your income is $57,890, how much taxes do you need to pay?

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

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)