N-2.5 represents the cost for each shirt being subtracted by $2.50 due to the coupon
Answer: n+2
Two lawns more than last week so two more than something with n being that something is; n+2
Let's use a for number of days when he shot 50 shots and b for number of days when he shot 100 shots.
We have:
a + b = 20
We also know that he shot total of 1250 shots:
50a + 100 b = 1250
We have two equations. We can solve them for a and b. Let's rearange first equation for a:
a= 20 - b
We insert this into second equation:
50 * (20 - b ) + 100b = 1250
1000 - 50b + 100b = 1250
50b = 250
b = 5
a = 20 - 5
a = 15
Mark shot 100 shots on 5 days.
For the first question, the answer is A (<em>p</em> = 27)
For the second one, I think that the answer is C
