Which word phrase represents the variable expression?

3n + 6

a.
three more than six times a number

b.
six more than the sum of a number and three

c.
three times the sum of a number and six

d.
six more than three times a number

Factorize: x^2+8x+10 i just solved it but i don't know if the process is correct

The standard distance between studs in a house is 1.5 feet. if you have a set of blueprints for a house that mark every 1.5 feet with 2 in., by how many inches will a 13-foot wall be represented?

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable