4*0.79+2*3.99+12.18+3*4.12 =35.68
including tax it's 35.68+ 8%of 35.68=35.68 +(8*35.68/100)=35.68+2.8544=38.5344$
31,61 ----- 436%
x ----------- 100%
------------------------
x = 31,61*100/436 = 3161/436 = 7,25
hope this will help you
The equation of a circle:

(h, k) - a coordinates of the center
r - a radius

Answer: B. (–5, 7); 3
Answer:
The x-intercepts are
and
.
Step-by-step explanation:
We are given the equation

Begin by dividing both sides of the equation by 2:

Next, take the square root of both sides. Remember that there are two solutions to a square root, the positive and the negative root:

Split the equation into two based on the two solutions:


Solve each equation by subtracting 1 from both sides:

Since the x-intercepts are the solutions to a quadratic, we know the solutions are (2,0) and (-4,0).