Algebra: must make a chart
$/lb * # of lbs = total
Oak 3.4 x 3.4x
Pine 2.6 40-x 104-2.6x
Mixture 2.8 40 112
Now you can set up your equation ( assuming you know how to do equations 'cuz I figure you're in algebra)
3.4x + 104 - 2.6x = 112
.8x + 104 = 112
.8x = 8
10 pounds of oak
30 pounds of pine
Function intercepts the x-axis where y=0
We can now calculate the discriminant and find the roots.
Answer: look at the picture, it going to take my long to write so I give you a picture. In the picture it my work done for you.
Step-by-step explanation: Hope this help :D
To do this, divide the numerator and denominator by the GCF. In this case, it's 5.
5:15
5 ÷ 5: 15÷5
1:3
Hope this helps!