8x+(4*30)=6(6+30)
8x+120=6x+180
2x=60
x=30 pounds of coffee
The decimal equivalent of 1/4 is 0.25.
If a solution(s) exists y=y so we can say:
x^2-3x=-2x+2 add 2x to both sides
x^2-x=2 subtract 2 from both sides
x^2-x-2=0 factor
(x-2)(x+1)=0
So x=-1 and 2, using y=-2x+2 we find:
y(-1)=4 and y(2)=-2
So the two solutions occur at the points:
(-1,4) and (2,-2)
1. 15-x
2. 4y
These are algebraic expressions for both.
Each interior angle = 540/5= 108
