1. (20 points) Consider the system of equations:
2x2
+3x2
+X₂
2x3
+X3
X1
2x
2
5
k
th-xz
a. (10 Points) Write the system in the form of an augmented matrix and row reduce it to echelon form.
b. (10 Points) Based on your results from part (a), fill in the appropriate value, or range of values, for the
two parameters h and k in the table according to the three possible types of solutions sets
No Solution
Unique Solution
Infinite # of Solutions
Parameter value(s)
h
k

2/3(-6y+9x) expand each expression using the distributive property

Mason and christian go to the movie theater and purchase refreshments for their friends. mason spends a total of $45.75 on 3 bags of popcorn and 6 drinks. christian spends a total of $71.50 on 6 bags of popcorn and 4 drinks. write a system of equations that can be used to find the price of one bag of popcorn and the price of one drink. using these equations, determine and state the price of a drink, to the nearest cent.

Suppose we have a set of small wooden blocks showing the 26 letters of the english alphabet, one letter per block. (think of scrabble tiles.) our set includes 10 copies of each letter. we place them into a bag and draw out one block at a time. (a) if we line up the letters on a rack as we draw them, how different ways coukl we fill a rack of 5 letters? (b) now suppose we just toss our chosen blocks into a pile, and whenever we draw a letter we already have, we put it back in the bag and draw again. how many different piles of 5 blocks could result? possible? piles will contain at least one repeated letter? (c) if we draw out 5 blocks wit hout looking at them, how many different piles are (d) if we draw out 5 blocks without looking at them, how many of the possible 2. (4) consider the following formula. 12 give two different proofs, one using the factorial formulas and the other combina torial.