13. Si Mang Ben ay nagtayo ng FISHPOND, gumastos siya ng 20,500 para sa pagpapagawa nito. Bumili siya ng isdang binhi (fingerlings) sa halagang 1,200 at linggo- linggo gumagastos
siya ng 500 para sa pagkain. Pagkaraan ng apat na buwan kailangan na anihin at ibenta ang
isda. Naibenta niya ang kanyang tilapia sa halagang 50,800. Magkano ang kinita ni Mang
Ben?
A. 20,300
B. 21,300
C. 30,300
D. 20,800​

Which states universal prekindergarten has been most effective in preparing children for school?

What is the difference between a journal entry written by an eyewitness to an event and a play written about the same event? a. the journal entry is a historiographical source, while the play is a periodical source. b. the journal entry is a chronological source, while the play is a primary source. c. the journal entry is a primary source, while the play is a secondary source. d. the journal entry is a secondary source, while the play is a periodical source.

According to the federal regulations, human subjects are living individuals about whom an investigator conducting research obtains information through interaction or intervention with the individual, and uses, studies, or analyzes the information; or: