Answer:
40%
Step-by-step explanation:
30% + 20% - 10%
= 40%
A- have a dog
P(A)=30%
B- have a cat
P(B)=20%
Have both pats
P(A&B)=10%
We want to know probability of (A or B), so we have:
P(AorB)=P(A)+P(B)-P(A&B)=30%+20%-10%=40%
If given the slope and y-intercept, you can directly get the slope intercept form as
y = -12x + 3