Which is the correct estimation and justification for the problem shown below

√10=?

A) about 5 because 2 x 5=10

B) about 5 because 5+5=10

C) about 4 because 4 x 4 = 16

D) about 3 because 3 x 3=9

If Darnell can buy 10 cases of water for $30.00, how much would it cost for 15 cases

A set of furniture contains one table and four chairs How much does one chair cost, if the table costs 80 dollars and the whole furniture set costs 200 dollars?

Juliette spends $6.12 at the store Morgan spends 3 times as much as Juliette Jonah spends $4.29 more than Morgan how much money does Jonah spend

Which is the product of the following numbers? -4 (-3 + 9i) (5 - 6i)

What times 0.914 equals to 400?

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.