Twelve years ago, mandy's father was 5 times as old as she. mandy's father was 28 years older than she. how old is mandy now?

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it.how many multiple-choice questions are on the test?

What could explain what happened when the time was equal to 120 minutes

Aculture started with 4,000 bacteria. after 5 hours, it grew to 5,200 bacteria. predict how many bacteria will be present after 19 hours. round your answer to the nearest whole number.