4. Kate and Sally went to the mall to shop. Kate bought 2 pairs of shoes and 2 pairs of sunglasses for $36.50. Sally bought 4 pairs of shoes and 1 pair of sunglasses
for $46.75.
In the system of equations below, x represents the cost of a pair of shoes and y
represents the cost of a pair of sunglasses.
2x + 2y = 36.50
4x + y = 46.75 ---> rewrite as y = 46.75 - 4x
What is the value of x, the cost of a pair of shoes?
Show work here: (5 points)

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for

8987678

step-by-step explanation:

the answer is 0052

0 0 5 2

5 0 2 6 3 5

− 0

2 6

− 0

2 6 3

− 2 5 0

1 3 5

− 1 0 0

3 5