Can someone explain to me how to do these, I dont get it.

A hair stylist worked from 8:45 A. M. until 12:15 P. M. and 12:45 P. M. until 5:15 P. M. Estimate the total number of hours worked.

8 hr

7 hr 15 min

8 hr 15 min

7 hr 30 min

If the surface area of a cube is 54 cm?, what is its volume? 64 cm 3 36 cm 3 27 cm 3 81 cm 3

Rearrange the equation so u is the independent variable. 4u+8w=-3u+2w w = __ Rearrange the equation so m is the independent variable. -2m - 5n = 7m - 3n

Marcus is planning a birthday trip to new york, a party bus cost $200 for one passenger how many people would be able attend if there is only 50 seats?

Three times the quantity of a number plus 6 is 18. What is the number?

A rectangular pool is 20 feet wide and 50 feet long. A deck used for sunning surrounds the pool. The deck is the same width all the way around the pool. The area of the deck is 456 square feet. How wide is the deck around the pool. A. 2 feet B.

Jacob is comparing the price of two different brand of water bottle. The first brand cost $30 for a case of 24 bottle and the second brand cost $39.60 for a case of 36 bottle. Which brand has the lower unit cost per bottle?

Which of the following sets of measurements is the MOST precise? OA) 1 m, 2 m, 3 m, 4 m OB) 2.9 m, 3.0 m, 3.1 m, 3.2 m OC) 10 m, 20 m, 30 m, 40 m OD 100 m 200 m 300 m 400 m

What does x equal to 35 - 2x > - 5

Solve the inequality and then graph its solution: 7s + 12 > 46 - 10s

Samantha, each year, reads 5 books during her 8 week break. How many books does she read each week?