To answer the question above, we let s be the cost of a shirt and h be the cost of each hat such that the equations that would best represent the given are:
10s + 20h = 490
20s + 30h = 860
The system of equations is the answer to the first question and the values of s and h are $25 and $12, respectively.
The value is 4 because 4b is also 4 times three which is twelve then you divide 12 by three and get 4
The solution to these linear equations is (4,-3)
So the x-value is 4
:)))
One of the 4 options prolly D
Answer:

Step-by-step explanation:
Given
Original


New

Required
Determine the new length (L2)
Since the original photographs was blown up; the original and the new photographs would have the same ratio
i.e.

and

Equate both ratios

Rewrite as fraction

Substitute values for L1, H1 and H2

Multiply both sides by 4






The new length must be 