Chứng minh rằng nếu đối với hàm tuyến tính f(x) = ax + b
các giá trị của đối số x = xn (n = 1, 2, ...) lập thành một cấp số cộng, thì
các giá trị tương ứng của hàm yn = f(xn)(n = 1, 2, ...) cũng lập thành cấp số
cộng

step-by-step explanation:

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.

step-by-step explanation:

this is not possible to solve with the info given.   you need at least an one angle somewhere.

answer: $201

step-by-step explanation: to get the answer, you first get 3 nieces that he sold and multiply it by 67 and get $201, so he earned $201 selling his nieces.