ACT Review

Front

What is probability?

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

How do you calculate the probability of an event?

Back

Probability of an event = (Number of favorable outcomes) / (Total number of outcomes).

Front

What is the formula for conditional probability?

Back

Conditional probability is given by P(A|B) = P(A and B) / P(B), where A and B are two events.

Front

What is the total number of students in the class?

Back

The total number of students is 8 juniors + 4 seniors = 12 students.

Front

If the first student selected is a junior, how many students are left?

Back

After selecting one junior, there are 11 students left (7 juniors and 4 seniors).

Front

What is the probability that the second student selected is a senior after a junior is selected first?

Back

The probability is P(Senior | Junior first) = Number of seniors left / Total students left = 4/11.

Front

What is temperature change?

Back

Temperature change is the difference in temperature between two points in time, calculated as final temperature - initial temperature.

Front

How do you calculate the temperature drop from 24°F to -12°F?

Back

Temperature drop = -12°F - 24°F = -36°F.

Front

What is the formula for calculating total cost?

Back

Total Cost = (Daily Rate * Number of Days) + (Cost per Mile * Number of Miles Driven).

Front

If a car is rented for 6 days at $35 per day, what is the cost?

Back

Cost for 6 days = 6 * $35 = $210.