A quantity z varies directly with y and inversely with x. Ifz= 12, y = 8, and x = 6, find y when z = 7 and x = 5. 3.9?
5.6?
12.3?
16.4?

F(x) = (x^2 + 3x − 4) and g (x) = (x+4) find f/g and state the domain.

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?

Describe the relationship between the angles of similar triangles and the sides of similar triangles