Find an explicit rule for the nth term of the sequence. 7, 21, 63, 189,

Step-by-step explanation:

using form:

where a: starting number

where r: common ratio (in this case each next term is 3 times previous term)

send it over

step-by-step explanation:

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere