The value of the guitar has been found to be -80y + 800, where y is the number of years since it was released. a. By how much is the value of the guitar decreasing per year? b. How much was the initial value of the comic?

Recall that area of the triangle is 1/2*(base)*(height)1/2*(13)*(17) = 110.5the answer is 110.5

This law is sometimes called the grouping property. as you can see, regardless of how the numbers are grouped, the answer is still 13. the associative law of multiplication is similar to the same law for addition. it says that no matter how you group numbers you are multiplying together, you will get the same answer.