Ivanna runs 6 miles in 50 minutes. At the same rate, how many miles would she run in 35 minutes?

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?

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?