Week 20 spiral

-14 = 4x - 2 

• -3
• 3
• 6
• 1

Penelope is going to the carnival to ride the rides. It costs $20 to get into the carnival and ride tickets are $0.50 each. 
The correct equation was .50x + 20 = 35.
So, how many tickets did she buy?

• x = 30
• x = 25
• x = 35
• x = 31

• 15.27

• 17.07

• 17.43

• 39.03

Solve the expression:
 $-12-5$ 

•  $-7$ 

•  $-17$ 

•  $17$ 

•  $7$ 

What number is 40% of 80?

• 30

• 32

• 320

• 40

An archaeologist estimated that a fossil was 520 years old. It was actually 500 years old. What was the percent error?

• 4%
• 20%
• 3.8%
• none of these

Which of the following are scaled copies of the original portrait? Select ALL the apply.

• A

• B

• C

• D

• E

Which side length on the scaled copy corresponds to the side length HJ on the original image?

• AB

• BC

• AC

A circle has a radius of 23 feet. What is the diameter of the circle?

• 23 feet

• 46 feet

• 1/2 feet

• none of the above

what is the diameter of the inner circle

• 16 in

• 12 in

• 4 in

• 8 ft