Answer:
see explanation
Step-by-step explanation:
The diagrams show triangular figures
The first figure has 1 dot
The second has 1 + 2 = 3 dots
The third has 3 + 3 = 6 dots
The fourth has 6 + 4 = 10 dots
Note the pattern is + 2 , + 3, + 4
Thus the fifth pattern is 10 + 5 = 15 dots
Answer:
B: y=cos(x-5). I'm sorry I can't really explain.
0 1 2 3 4 5 6 7 8 9 10
___________________________________
0 1 2 3 4 5 6 0 0 0 0
you only can only buy six pencils and six erasers
It should be 6, radius is half of the circumference (6/3=2).
