Ai bought three books for $8.71, $14.12, and $21.92. What is the best estimate for the total cost of the books?

A $45

B $43

C $40

D $30

A light bulb consumes 3120 watt-hours in 3 days and 6 hours. How many watt-hours does it consume per day?

Tell how you know how many zeros there should be in a product.

What is the benefit of using a coordinate graph?

Elijah used 3/4 of the memory on his cell phone memory card if the memory card can hold 32 gigabytes how many gigabytes did Elijah use

The price of a cup of coffee had dropped to $2.30 today. Yesterday's price was $2.65. Find the percentage decrease. Round your answer to the nearest tenth of a percent.

What's 125,210,000 written in word form

Samantha saw two bottles of ketchup at the store. One bottle contained 4 pints while the other contained 1.25 quarts of ketchup. Which one was the better bargain

42 = 7/6w What is w?

Suppose you invest $10,410 in equipment to manufacture a new board game. Each game costs $2.65 to manufacture and sells for $20. How many games must you make and sell before your business breaks even? a. 500 games c. 600 games b. 550 games d.

There are 5 blue marbles, 2 red marbles, 1 orange marble, and 2 green marbles in a bag. Once a marble is drawn, it is replaced. Find the probability of selecting a blue marble, and then an orange marble.