60% of x is equal to 87. Write an equation that expresses the relationship between 60%, x, and 87. Solve your equation plz

Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining bismuth-210 transforms into another atom (polonium-210 in this case) each day. if you begin with 233 mg of bismuth-210, how much remains after 8 days?

Use set buikder notation to represent the following set: {, -2, -1, 0}

If you have the following equation, 2/3x+5/6-x=2-3/4x what would you multiply each term by to get rid of all the fractions