Suri charges by the day to walk a dog. She charges $6.25 for 5 days and $8.75 for 7 days. Which equation represents this relationship?

Find the difference (8ab+a+2) - (3ab+6)

Twelve less than a number is at most 20

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?