Darryl is reading a book at the rate of 4.5 pages per minute. what ordered pair on a graph of his reading rate would represent the number of minutes it would take him to read 90 pages

(98 points) i need with 5 questions. answer definitions are welcomed, but not necessary.

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?

The classrooms are trying to raise $1,200.00 for charity. mrs. leblanc's class has raised 50%. mr. patel's class has raised $235.14 ms. warner's class has raised 1/3 as much as mrs. leblanc's class. how much more money is needed to reach the goal of $1,200.00?