5. stephania lives in broderick, saskatchewan, and plans to buy a truck. she has two options:

option a: she can purchase a new truck, with only basic features, for $22 789.00 plus 5%
gst and 5% pst.

option b: she can buy a 5 year-old truck with approximately 120 000 km on it, but with
many upgraded features, for the same price ($22 789) plus 5% gst (pst is not charged on
used vehicles in saskatchewan)

a) calculate how much stefania would have to pay for each option.

b) give one advantage and one disadvantage for each option.

Zahra was given two data sets, one without an outlier and one with an outlier. data without an outlier: 15, 19, 22, 26, 29 data with an outlier: 15, 19, 22, 26, 29, 81

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

How do you determine if an ordered pair is a solution to a given equation?