The graph below shows the relationship between the number of dollars x and the number of tickets you can buy y. tell whether the quantities are in a proportional relationship. if so write an equation that represents the relationship.

a. this relationship is proportional. the equation is y=1/12x.

b. this relationship is proportional. the equation is y= 12x+4.

c. this relationship is proportional. the equation is y=12x.

d. this relationship is not proportional

Given that de, df, and ef are midsegments of △abc, and de=3.2 feet, ef=4 feet, and df=2.4 feet, the perimeter of △abc is .

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.