Step 1
Write out the system of equations


Step 2
Find the value of one pound of type A coffee, x


Therefore the answer will be;

The pounds of type B coffee she used is 64pounds
The pounds of type A coffee she used is 84 pounds
Answer:
40 months
Step-by-step explanation:
Since it takes him 2 months to drive 15,000 miles
He drives 7,500 miles/month (15,000 miles / 2months)
Dividing the total distance by his speed yields the time it takes to drive that distance
300,000 miles / 7,500 miles/month = 40 months
Answer:
23
Step-by-step explanation:
You can simply substitute -2 into the x of the equation.
f(-2) = (-2)^4 + 2(-2)^2 -1
= 23
Answer:
x = 49
Step-by-step explanation:
The two interior angles added together equal the exterior angle.
Make an equation and solve for x.
x - 4 + 2x + 10 = 153
3x + 6 = 153
3x + 6 - 6 = 153 - 6
3x = 147
3x/3 = 147/3
x = 49
Answer:
Step-by-step explanation:
Length of the garden = 4 - 21*x - 28*y
Width of the garden = -6*x*y
Perimeter of the garden = 2*(Length + Width)
P = 8 - 42*x - 56*y - 12*x*y