Which expressions are equivalent to 2(4f+2g)
chose 3 answers
a: 8f+2g
b: 2f(4+2g)
c: 8f+4g
d: 4(2f+g)
e: 4f+4f+4g

Aportion of a line bounded by two points is defined as

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

Which of the following parabolas opens down?