Answer:

Step-by-step explanation:
Let
c -----> the additional amount (in dollars) David will spend
we know that
The word " at most" in this context means "less than or equal to"
The amount David has spent plus possible additional amounts he will spend must be less than or equal to $39
so
The inequality that represent this situation is

solve for c
subtract 22 both sides


The maximum amount he could spend is $17
Do each equation individually and compare if they are the same end answer in each question. which ever one is unequal than that is the answer
I believe you meant the equal signs to be division symbols haha. The next step would be 18/6.
Answer:
letter (c) maybe and what's next