R=23 because its slope the formula is Y-Y/X-X
v = w - 20
move -20 to the other side
sign changes from -20 to +20
to get w by itself
v+20= w-20+20
Answer:
w= v+20 or w= 20+v
If you divide 4.2 by 0.02 you should get 210
There is 60% of red t-shirts 40% of them are white and blue so the reds are 60%