-4 as if it was -1/4 that would mean it goes to right 4 times and down 1
To solve for an unknown number, you have to keep isolating it till it is all alone:
A=P(1+rt)
(1+rt)=A/P
rt=A/P -1
r=(A/P-1)/t
Answer: 19 units
Step-by-step explanation:
Count from A down then the left until you reach B.
We can see that the diameter is 5 cm. Radius is simply half of the diameter.
5/2=2.5
The radius is 2.5 cm.