Point r moves so that its distance from point (1,2) is two times the distance from x-intercept. find the equation of locus r.
the answer is
x^2 - 2x - 3y^2 - 4y + 5 = 0

With: label the vertices and all the elements needed. find x

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )

Margie is practicing for an upcoming tennis tournament. her first serve is good 20 out of 30 times on average. margie wants to know the estimated probability that her first serve will be good at least four of the next six times she serves. how could she design a simulation for this scenario?