A₁ = -8 This is the first term in an arithmetic sequence.
d = 3, the common difference
a(n) = a₁ + d(n-1)
a₇ = -8 + 3(7-1)
a₇ = -8 + 3(6)
a₇ = -8 + 18
a₇ = 10
To check:
a₁ = -8
a₂ = -8 + 3 = -5
a₃ = -5 + 3 = -2
a₄ = -2 + 3 = 1
a₅ = 1 + 3 = 4
a₆ = 4 + 3 = 7
a₇ = 7 + 3 = 10
Answer:
$9.60 for 42 fl oz
Step-by-step explanation:
$6.15 x 2=$12.30
$12.30 for 44 fl oz
$12.30-$9.60=$2.70
you would be paying $2.70 for 4 fl oz when 4 fl oz is 93 cent
Answer:
C) 
Step-by-step explanation:
Use the Angle Addition Postulate to figure this out:
165° = (x + 15)° + (9x)°
165° = (15 + 10x)°
- 15° - 15°
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[Plug this back into the modeled expression for the 
to get the angle measure of 30°]; 
I am joyous to assist you anytime.
Answer:
78
Step-by-step explanation:
The IQR is quartile 3 - quartile 1. First, we need to find the mean of the dataset, which is 50 -- the fifth number. Then, the median of the dataset on the left of the fifth number is the first quartile, and the median of the dataset on the right is the third. We get Q1 to then be halfway between 30 and 50, or 40, and Q3 to be halfway between 56 and n, so Q3 = (56+n)/2. Since we need Q3-Q1=27, or (56+n)/2-40=27, we have (56+n)/2=67 and 56+n=134, so n = 134-56=78
