6.3D

Which of the following expressions simplifies to -1?

• III only

• II and III only

• I, II, and III only

• I, III, and IV only

By noon, the temperature increased 21°F from the morning low of -13°F. What was the temperature at noon?

• 21°F

• 8°F

• 34°F

• 12°F

Jackson went deep sea diving with some friends. If he descends at a rate of 4 feet per minute, what integer represents Jackson’s depth in a quarter of an hour?

• 100

• -60

• -100

• 60

Which expression has the least value?

• -7 · (-9) – 50 + 4

• 46 – 74 + (-7) · (-4)

• (-91 + 67) ÷ (-6)

• 156 ÷ (-6) + 25

A shark swims at a depth of 275 feet below sea level. After sighting a whale, the shark moves 190 feet closer to the surface. What integer represents the shark’s new depth?

• 465

• -125

• -85

• 125

Marco has a balance of -$19 in his checking account. He makes a trip to the bank to deposit $368. The next day he purchases a new video game for $47 using his debit card. What is Marco’s new balance after he purchases the video game?

• $434

• $339

• $302

• $301

A submarine travels at a depth of 432 feet below sea level, while an airplane flies at an altitude of 1,388 feet. What is the distance between the submarine and the airplane?

• 1,820 feet

• 1,556 feet

• 1,388 feet

• 432 feet

Michelle’s checking account shows the following entries: Balance on Aug 10 is $771, Deposit on Aug 15 is $250, Withdrawal on Aug 17 is $1,028. What is Michelle’s account balance after the withdrawal on August 17?

• $50

• $ -7

• $ -9

• $ 1

In the last three plays of the second quarter, the Belton Bulldogs football team lost 27 yards. What is the team’s average yards per play?

• -9 yards

• 9 yards

• -27 yards

• 27 yards

An airplane’s position changes –1,500 feet per minute. What integer represents the total change in position of the airplane after 5 minutes?

• -7,500 feet

• 7,500 feet

• -1,500 feet

• 1,500 feet