Just solve the equation, x + 0.15x + 0.06x = 15
1.21x = 15,
x = $12.39 (nearly)
Answer:
a. Divide the figure into two rectangles, find the area of each rectangle and add them (See the picture attached).
b. 
c. The total area of the figure is 279 square inches.
Step-by-step explanation:
a. Divide the figure into two rectangles (See the picture attached), then find the area of each rectangle and finally, add the areas calculated in order to get the total area of the given figure,
b. The area of a rectangle can be found using this formula:

Where "l" is lenght and "w" is the width.
Area of Rectangle A
You can identify that:

Then, its area is:

Area of Rectangle B
You can identify that:

Then, its area is:

Total area

c. The total area of the figure is 279 square inches.
Answer:
C.)
Step-by-step explanation:
every other customer at all the convenience stores in Springville that stock both brand A and brand B
Answer: $2 variable per person, 120 base fee Step-by -step explanation : the delta are 20 persons and \$40 therefore variable cost are $2 per person base fee: 180-30*2=120
Hope this helps