Katie stayed in a hotel that had 21 rooms. The number of rooms on each floor was 4 more than the number of floors in the hotel. How many floors did the hotel have?

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent and the median? 40 25 8 36 18 15 24 27 43 9 12 19 22 34 31 20 26 19 17 28

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?