Write using exponents: 3⋅3⋅3⋅p⋅p⋅p

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?