Answer:
The rule for a rotation by 270° about the origin is (x,y)→(y,−x) .
Answer:
C
Step-by-step explanation:
It passes the horizontal line test
Answer:
each brother received 1,015 marbles cus 2,030 divided by 2 is 1,015.
Answer:
The 21st term is 137.
Step-by-step explanation:
Arithmetic progression:
In an arithmetic progression the difference between consecutive terms is always the same, and its called common difference.
The nth term is given by:

In which
is the first term and d is the common difference.
The first two terms are -3, 4.
This means that 
So


The 21st term is

The 21st term is 137.