Will mark brainiest

2.) Find the sum and choose the correct answer.

2n^3 + 4n^2 - 7 and - n^3 + 8n - 9

A.) - n^3 - 4n^2 - 8n - 16

B.) n^3 + 4n^2 + 8n - 16

C.) n^3 + 4n^2 + 8n + 16

D.) 3n^3 + 4n^2 + 8n - 2

Solve for k. J=k^2/4

5/x=25/6 how do I solve it and what is x?

Deyonne made 25% more cookies than Cameron. they sold the cookies for $0.50 each. let represent the number of cookies Cameron made. which of the following expression represent possible revenue from the sale. select all that apply a 0.50 (x+0.25x) b.

A = P (1+nr); solve for r

A worker earns 9 dollars per hour for a regular workday and $13.50 per hour for additional hours. if the worker was paid $114.75 for an 11-hour workday, what is the length of a regular workday?

Evaluate the expression below when y = - 3. 2y + 7 -4y - 10 A. -1 22 B. -13 2 C. 1 2 D. 1

A science teacher ordered $660 worth of microscopes and dissection kits for the new science lab. A total of 22 microscopes and 44 dissection kits were ordered. A microscope costs three times as much as a dissection kit.

The square root of a 100 is it a whole number or natural number

How do u expand 500,000

How does the volume of a sphere with radius 2cm compare to the volume of a sphere with radius 1cm