2A.1 Convert 100 inches to meters, using the facts: 1 in = 2.54 cm, 1 m = 100 cm.

2A.2 A new sidewalk will be 4.5 feet wide, 450 feet long, and filled to a depth of 8 inches with concrete. How many cubic yards of concrete are needed? (1 foot = 12 inches, 1 yard = 3 feet)

2A.3 It is advised to drink 0.75 ounce per pound of your weight every day. Suppose Megan's weight is 65 kilograms, how many ounces of water should Megan drink per day? (1 kg = 2.205 lb.) Round your answer to the nearest hundredth.

2A.4 Convert 2.4 kilometers per minute to miles per hour. Round to two decimal places.

[1 meters 39.37 inches; 1 kilometer 0.62 miles; 1 hour = 60 minutes;

1 minute = 60 seconds]

2B.1 In each case, decide which of the two given prices is the better deal. Case1: Shampoo in a 16-fluid-ounce bottle for $2.79. Case2: Shampoo in a 25-fluid-ounce bottle for $4.39.

2B.2 A hose fills a hot tub at a rate of 5.4 gallons per minute. How many hours will it take to fill a 500-gallon hot tub?

3A.1 Express the first number as a percentage of the second number: 30 pounds of recyclable trash in a barrel of 54 pounds of trash.

3A.2 Amy's hourly wage increased from $15 to $22 over a three-year period. Ian's hourly wage increased from $25 to $34 over the same period. Whose salary increased more in relative terms (percentage changes)?

3A.3 The main span of the Tacoma Narrows bridge is 2800 feet. How many percentages shorter is the Tacoma Narrows bridge compared to the main span of the Golden Gate bridge (4200 feet)?

3A.4 The following table shows the number of infected cases of coronavirus in the U.S. a. Find the percentage changes every day from April 1^st to April 5^th b. Find the average percentage change.

Date	April 1	April 2	April 3	April 4	April 5
Infected cases	213,144	239,279	277,205	304,826	330,891

3B.1 Write the diameter of a typical bacterium, 0.0000235 meter, in millimeters in scientific notation.

3B.2 How many average candy bars (2.5 x 10⁵ joules from 1 candy bar) you have to eat to supply the energy needed for 9 hours of running (8.8 x 10⁷ joules for 1 hour of running)?

3B.3 Find the scale ratio for the map where 1 inch on the map represents 100 kilometers. (1 inch = 2.54 cm, 1 km = 1000 m, 1 m = 100 cm)