Answer:
Step-by-step explanation:
Three eights
It is 157. Try long division:)
Let A represent amount of Type A coffee pounds used.
Let B represent amount of Type B coffee pounds used
A + B = 156
B = 156 - A
A = 156 - B
5.80A + 4.65B = 826.60
580 (156 - B) + 4.65B - 826.60 = 0
904.8 - 5.80B + 4.65B - 826.60 = 0
904.8 - 1.15B - 826.60 = 0
78.2 - 1.15B = 0
78.2/1.15 = 1.15B/1.15
68 = B
B = 68 pounds of Type B coffee
There's many more steps you can take to check and etc but am too lazy to put down sorry.
To buy the radio it would cost $22.5 I believe
To have it delivered it would cost $2.5 I believe
So overall that would cost $25
( I apologize if I'm wrong)
Recall that +(-1) = -1. Thus, +(-12) = -12. Then you have -6n - 12 + 4n, or
12-4n (answer)
This is equivalent to 2(2n-6).
You must also check 4(n-3) - 6n. Is the end result the same as 2(2n-6)?
