C. Divide the previous value by 5
Answer:
13
Step-by-step explanation:
13
2/35
2 {
------{-
1 5
1 5
----------
0
12/15=8/(x-4)
12(x-4)=8(12)
12x-48=96
12x=144
x=12
Answer:
Basic fee = $14.95
1.5 dollars per quart of oil
Step-by-step explanation:
Each customer is charged a fee x (in dollars) for the oil change, plus y dollars per quart of oil used.
The oil change for the car that requires 5 quart of oil costs $22.45.


The oil change for the car that requires 7 quarts of oil costs $25.45.


Both equation having x
so make it equal and solve for y

Add 7y on both sides

subtract 22.45 from both sides

now plug in 1.5 for y and solve for x

Answer:
This will be the sum of a geometric series where the first term is 4
The common ratio is -5
And we will have 6 terms.....so....the sum is
first term [ 1 - common ratio^number of terms ] / [ 1 - common ratio ] =
4 [1 - (-5)^6] / [ 1 - -5 ] =
4 [ 1 - 15625 ] / 6 =
(2/3) ( -15624 ) =
-10416
Step-by-step explanation: