Answer:
-3
Step-by-step explanation:
Here is a different example.
'm' is the gradient (or slope). We measure the difference between the two x values and two y values to see how each of them changed respectively. We know m = rise/run so we can put in our slope (7) and points to find t.
yhttps://www.google.com/url?sa=i&source=images&cd=&cad=rja&uact=8&ved=2ahUKEwjE0ciR9-XhAhWXfysKHfFwDVUQjRx6BAgBEAU&url=http%3A%2F%2Fpassyworldofmathematics.com%2Fgradient-slope-formula%2F&psig=AOvVaw1_FXiYTOdfwHU9OggjGhLw&ust=1556099125501066
Mathpapa.com is the website to use
1/3 c equals 3/9 cups
increasing that by 2/9 cups gives total 5/9 cups
Yes, you're right! The first step is rewriting the equation as

Subtract
from both sides:

Use the property
to rewrite the equation as

Divide both sides by 

Alternative strategy:
Consider both sides as exponents of e:

Use
to write

Divide both sides by a:

Consider the logarithm base b of both sides:

The two numbers are the same: you can check it using the rule for changing the base of logarithms
Yes because the 7% tax is only $1.26 so the total is $19.26