Answer:21400
Step-by-step explanation: without tax=$20000
Tax=7%
Including tax=20000+7% of20000
That is 20000+7×20000/100=21400
So total cost is $21400
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Answer:
cat
Step-by-step explanation:
Each ruler would cost about 9 cents
Answer:
2x+15=33
Step-by-step explanation:
Let n be the number of days he has been doing sit ups, not counting the first day. Since he does 2 more sit-ups for each day, then the number of additional sit-ups is 2n.
Since he started doing 15 sit-ups on the first day, the total number of sit-ups
after x days would be 2n+15.
Since he did a total of 33 sit ups today, then 2n+15=33
