Answer:
$5.75
Step-by-step explanation:
Find the difference between the weeks as this will give you the difference hence the amount deposited each week
0->1
is 12.00->17.75
diffrence is $5.75
1->2
is 17.75->23.50
diffrence is $5.75
the amount saved each week is $5.75
The slope-point formula:

The formula of a slope: 
We have:

Substitute and calculate:

Answer:
a. The total length of cloth that the dressmaker bought.
b. 2/5 m, 1/3 m, 1/6 m
c. Addition of fractions
Step-by-step explanation:
Step 1. Get the LCD or least common denominator which is in this case 30.
Step 2. Transform each fraction into similar fractions having the same denominator.
12/30, 10/30, 5/30
Step 3. Add now the similar fractions and simplify to lowest terms
27/30 ÷3 = 9/10
I hope it helps :)