Answer:

b) The cost of 11 T-shirts during bargain days is $85.75
Step-by-step explanation:
We are given the following information in the question:
Discounted cost of one T-shirt = $8.25
Additional off on coupon = $5.00
Let t be the number of T-shirts bought during the bargain days.
a) Then, the price of t T-shirts with the discount applied will be given by the function:

b) Price during Bargain Days for 11 shirts
We put t = 11 in the above function:

Thus, the cost of 11 T-shirts during bargain days is $85.75
It depends on how fast the water is floating into it.
Answer:
125°
Step-by-step explanation:
Angle NMP and angle LMK are equal as they are vertical angles!
When straight lines intersect one another, the angles are the same.
Answer:
see explanation
Step-by-step explanation:
the sum to n terms of an arithmetic sequence is
=
[2a + (n - 1)d ]
where d is the common difference and a is the first term
here d = 9 - 7 = 7 - 5 = 2 and a = 5, hence
=
[(2 × 5) + 2(n - 1) ]
=
(10 + 2n - 2)
=
(2n + 8)
= n² + 4n
When sum = 165, then
n² + 4n = 165 ← rearrange into standard form
n² + 4n - 165 = 0 ← in standard form
(n + 15)(n - 11) = 0 ← in factored form
equate each factor to zero and solve for n
n + 15 = 0 ⇒ n = - 15
n - 11 = 0 ⇒ n = 11
but n > 0 ⇒ n = 11
Answer: $25 spent
Step-by-step explanation: the boy spent $15/total.
15/total=3/8
Divide by common factor: $15/3=$5 (1/8 total money
$5x8=$40
$40-$15=$25 spent