When baking and you need to know whether you have to buy a half a gallon or a gallon:)
Answer:
You will break even on the car wash when you buy 13.5 gallons. As long as you buy that or more, it is cheaper to get the car wash.
Step-by-step explanation:
In order to find this, we need to create equations for both situations. If we let x equal the amount of gallons purchased, we can model the first equation as:
f(x) = 3.35x
And the second equation as:
f(x) = 3.05x + 4.05
Then to find when they equal each other, we can set the two equations equal to each other and solve for x.
3.35x = 3.05x + 4.05
0.30x = 4.05
x = 13.5
This means once you buy 13.5 gallons, the prices will be the same. Any amount over that and the car wash will be cheaper
D i think look at the chart
The square of a rational number is a rational number.
<h3>What are rational numbers?</h3>
A rational number is a number that is expressed as the ratio of two integers, where the denominator should not be equal to zero.
A rational number is a number that is of the form p/q where p and q are integers and q is not equal to 0.
Therefore, rational numbers are express as follows; p / q.
Hence, x is a rational number . let's confirm that x² is rational or not.
Therefore, When we square a rational number, each prime factor has an even exponent.
For example
p / q = p²/ q²
Hence, the square is a rational number.
learn more on rational number: brainly.com/question/14066831
#SPJ1
You can just use sine.
Sin(F) = opposite/hypotenuse = 28/40.
F =
![sin^{-1}](https://tex.z-dn.net/?f=%20sin%5E%7B-1%7D%20)
(28/40)
Plug into your calculator.
44.4