A bag has 7 red marbles, 8 blue marbles and 5 purple marbles. Rachel draws a marble from the bag without looking. What is the probability that Rachel draws a blue marble?
O A 45
OB. 8%
O c. 12.5%
D. 405
O E 66.75

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made. determine an equation to model his situation?

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.