Answer:

Step-by-step explanation:
Given



Required
Determine the change received
First, we need to calculate the total amount spent


This implies that Natalie pays a total of $41.18
Next, we calculate the change as thus:



<em>Hence, the change is $8.82</em>
55 + 8.50d = 123
55 for rental
8.50d for each day she pays 8.50 so add the d and then equal sign and 123.
Answer:

Step-by-step explanation:



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13 × 9w = 13 × 
117w = 5w - 6 + 13
117w = 5w + 7
117w - 5w = 5w - 5w + 7
112w = 7
112w ÷ 112 = 7 ÷ 112

Answer:
r=3
Step-by-step explanation:
Simplify the expression
16-2r=3r+1
isolate r by adding 2r to both sides
16=5r+1
isolate the numbers by subtracting 1 from both sides
15=5r
divide both sides by 5 to completely isolate r
r=3