You are planning to take on a part time job as a waiter at a local restaurant. during your interview, the boss told you that their best waitress, betty, made an average of $70 a night in tips last week. however, when you asked betty about this, she said she made an average of only $50 per night last week. she provides you with a copy of her nightly tip amounts from last week: day tip amount sunday $50 monday $45 wednesday $48 friday $125 saturday $85 calculate the mean and median tip amount. which value did betty's boss use to describe the average tip? which did betty use?

Demonstrate the proof of your new polynomial identity through an algebraic proof and a numerical proof in an engaging way! make it so the whole world wants to purchase your polynomial identity and can't imagine living without it! you must: label and display your new polynomial identity prove that it is true through an algebraic proof, identifying each step demonstrate that your polynomial identity works on numerical relationships create your own using the columns below. see what happens when different binomials or trinomials are combined. square one factor from column a and add it to one factor from column b to develop your own identity. column a column b (x − y) (x2 + 2xy + y2) (x + y) (x2 − 2xy + y2) (y + x) (ax + b) (y − x) (cy + d)

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation

What is the expression in factored form? 225x^2 - 144 a. 9(5x+4)^2 b. 9(5x-4)^2 c. 9(4x+5)(4x-5) d. 9(5x+4)(5x-4)