Unit 1 Test Review

Which pair of numbers are opposites?

• Jacob spent $2 then earned 18 dimes
• The value of stock increased by 7 points then decreased by 10 points.
• Karter climbed the mountain 800 feet Monday and climbed 800 more feet Tuesday.
• Parker drove 15 feet below the surface then swam up 15 feet 5 seconds later

Which situation below describes the number line shown?

• The temperature outside rose 5 degrees and dropped 2 degrees
• Harper earned $7 helping his dad, then spent $5 on lunch.
• Lara spent $7 on a new shirt, then spent $5 dollars on a new hat
• Katie walked 7 blocks to her friend’s house, then walked 2 blocks back

You can express the length of a surfboard as 20𝑥+3𝑦−12. A skim board’s length is represented as −11𝑦−2𝑥+21. What is the simplified expression for the total length of the boards if you put them end to end?

• 18𝑥−8𝑦+9
• 22𝑥−14𝑦+33
• 22𝑥+14𝑦−9
• 18𝑥+8𝑦+9

Simplify the expression:−3(2𝑚−9)−6(−4−𝑚)

• 12𝑚+51
• 51
• −12𝑚+51
• −12𝑚−3

Reid is buying books at the book fair. He buys paperback books for $3.50 and he buys hardback books for $6.50. Reid spent a total of $17.00. Which expression represents the total that Reid would spend if he bought p number of paperback books and h number of hardback books?

• 17 – 3.50p
• 3.50p + 6.50h
• 3.50h + 6.50p
• 3.50p – 6.50h

If Q=1 and U=-1, what is the value of 𝑄𝑈?

• 1
• -1
• -11
• 11

Nikki is selling pairs of earrings for $2.00 and rings for $5.00. How much would Nikki make if she sold 6 pair of earrings and 2 rings?

• $34.00
• $22.00
• $42.00
• $56.00

In Detroit the high temperatures in degrees Fahrenheit for five days in January were -12°, -8°, -3°, 6°, -15°. What was the average temperature for these five days

• -32°
• -6.4°
• 32°
• 6.4°

Henry made three withdrawals of $2 each from his savings account. What was the change in his balance?

• $6.00, a $6.00 increase
• -$5.00, a $5.00 decrease
• -$6.00, a $6.00 decrease
• $5.00, a $5.00 increase

Which expression is equivalent to -4k – 9 + 5k ?

• -4 times k
• -9 times k, take away 9
• 9 less than k
• 5 times k plus 9