The vertex form of the equation of a parabola is y = (x - 3)2 + 36.
What is the standard form of the equation?
O A. y = x2 + 6x+ 36
O B. y= 3x2 - 6x+45
O C. y = x2 + x + 18
O D. y = x2 - 6x + 45

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?

Using elimination, what is -4x+2y=-12 4x+8y=-24

At a book fair, joe bought 24 books at 3 for $5 and had $2 left. how much money did he have at first?