On test day, a teacher sharpens 19 pencils to lend out to his students. If n represents the number of pencils that the teacher lends out, which expression represents the number of pencils he has left?
A) 19 - n
B) 19 + n
C) n-19
D) 19n
*Please help!*
Evaluate t - u/v when t = -1, u = -3, and v = 1/2
I am VERY VERY unsure what the answer is. PLEASE HELP!!! I am stuck on this!!!
4 answers
For the first one, substitute the numbers for the letters.
He has 19 pencils. He takes n away.
What do you think?
He has 19 pencils. He takes n away.
What do you think?
19 - n?
Correct.