Let a represent the number of ounces of perfume a. let b represent the number of ounces of perfume b. perfume a costs $11 per ounce, and perfume b costs $19 per ounce. the perfume maker wants to make a bottle that costs $71. write an equation in standard form that models the cost of each perfume in the 5-ounce bottle.

The system of equations in standard form is equal to

The number of ounces of perfume A is

The number of ounces of perfume B is

Step-by-step explanation:

Let

a-----> the number of ounces of perfume A

b----> the number of ounces of perfume B

we know that

-----> equation A

-----> equation B

substitute equation B in equation A and solve for b

Find the value of a

----->

1/5^2 = 7.56/45

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.