Which set is closed under the operation multiplication?

A.

{1, 2, 4}

B.

{0.5, 1, 2}

C.

{0}

D.

{1, 2, 3, 4, 5}

Grace earns $7 for each car she wishes. She always saves $25 for her weekly earnings. This week, she wants to have at least $65 in spending money. How many cars must she wash?

A student finds the slop of the line between (4, 3) and (-2, - 2). She writes - 2-4/-2-3. What mistake did she make?

What are the domain and range of the function { (2, 0), (4, - 2), (8, - 2), (1, 6), (-5, 0) }? A. Domain: {2, - 2}; Range: {4, 1, 8, - 5} B. Domain: {2, 4, 8, 6, 0}; Range: {0, - 2, 6} C. Domain: {0, - 2, 6}; Range: {2, 4, 8, 1, - 5} D.

Fred has 204 books he donates 2/11 how many books did he donate

The slope of a line that is perpendicular to a line whole slope is - 2/7 is

2 (-1-1) - (-1+5) - 7 (2 (-1) - 1)

There are a total of 20 lions, tigers and bears. If the number of tigers is 2 more than the number of lions and the number of bears is 1 more than the number of tigers, find the number of each.

Is it possible to carry a 9 foot piece of lumber in an enclosed rectangular trailer that is 4 feet by 8 feet by 4 feet?

Find the next term of given sequence. 11, 37, 127, 445, 1591, ...

Larry bought 2⁄3 pound of red potatoes and 3⁄4 pound of golden potatoes. How many pounds of potatoes did he buy in all?