Can someone explain to me how to solve problems like this? Thanks!

Step-by-step explanation:

In this problem, you are adding 2 functions. To do this, simply take the 2 different rules for each function and add them together. This looks like . Then, to get the final answer remove the parentheses and add like terms. The terms and are like while 5 and 4 are also like. If you add and you get and 5+4 is 9. Therefore, the final answer is

so a parallelogram is just like a square base times height. multiply 40 and 39 to get 1560 inches.

a triangle is base times height divided by two. so multiply 7.9 and 5 and then divide it by 2 to get 19.75inches.

the kite can be split into two separate triangles and added together to get the total area. 30 x 4 /2 which equals 60. make sure to double it for the two triangles making 120.