<h2>
</h2>
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5 ( 3a - 9 )
( 5 × 3a ) - ( 5 × 9 )
15a - 45
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Answer= -4
-1+-3=-4
Step by step-
Add like normal then add the sign since both numbers are negative.
3+1= 4 then add the sign
For problem 1, it will be 25/100, which is equal to 25%
2) The relationship is that both, the bar model and the proportion, show that x is 1/4 of the actual amount. The bar graph is more a visual. However, in both cases, the x can be solved for to be 25%
3) The percent error for 23°C will be less since it is closer to 25°C, the actual amount. The percent error is greater for 5°C since it is farther for 25°C.
Yes, it is an equivalent expression because even though you move two pieces of an equation it will still equal the same thing, unless there are parentheses involved.
Answer:
Lucy sews 
dresses in 1 hour.
Step-by-step explanation:
Given:
Lucy sews 
of a dress in 
hour.
She sews at constant rate.
We need to find the number of dresses she makes in 1 hour.
In hour = dress
So in 1 hour = Number of dresses in 1 hour
By using Unitary method we get;
Number of dresses in 1 hour= 
Hence Lucy sews dresses in 1 hour.
