What's 3a+3=9 what's a stand for

A pilot was scheduled to depart at 4:00 pm, but due to air traffic, her departure has been delayed by 10 minutes.

What is 40% of 20? 1) 8 2) 10 3) 12 4) 14

A restaurant manager recorded the number of people in different age groups who attended her food festival: Histogram with title Food Festival Participants, horizontal axis labeled Age Group (yr) with bins 0 to 19, 20 to 39, 40 to 59, and 60 to 79

Which expression does not belong with the other three? Explain your reasoning. 10/-5 - 10/5 - 10/-5 or - (10/5)

Raymond and Daniel were in a pie eating contest. Daniel ate five times as many pies as Raymond. Together they ate 24 pies in 30 minutes. How many pies did each one eat? steps?

A book has 15 chapters. The mean length of the chapters is 41 pages. How many total pages are there in the 15 chapters?

An insurance company has 1,000 policies on men of age 50. The company estimates that the probability that a man of age 50 dies within a year is. 01.

Solve 3 (3 - 3x) + 4 = - 5.

An elephant can run 1/4 of a mile in 36 seconds how fast can that elephant run in mph

the flagpole cast an 8 foot shadow, as shown in the table. At the same time the oak tree cast a 12 foot shadow. How tall is the oak tree? And the flagpole height is 20 ft