An amusement park reports that the probability of a visitor riding its largest roller coaster is 30 percent, the probability of a visitor riding its smallest roller coaster is 20 percent, and the probability of a visitor riding both roller coasters is 15 percent.

which equation can be used to calculate the probability of a visitor riding the largest or the smallest roller coaster?

p(largest or smallest) = 0.30 - 0.20
p(largest or smallest) = 0.30 + 0.15 - 0.20
p(largest or smallest) = 0.30 + 0.20 - 0.15
p(largest or smallest) = 0.30 + 0.20

Third Option is correct.

Explanation:

Since we have given that

Probability of a visitor riding its largest roller coaster=P(L) = 30%

Probability of a visitor riding its smallest roller coaster =P(S)= 20%

Probability of a visitor riding its both roller coasters =P(L and S)= 15%

According to the formula, we get

So, Probability of largest or smallest  is 35%.

Hence, Third Option is correct.

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

the answer to this question is 3/19

step-by-step explanation: