Apolling organizations wants to sample the opinions of low-, medium-, and high-income people.

which sampling strategy is best suited for this purpose?

a.
convenience

b.
simple random

c.
stratified random

d.
systematic

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

step-by-step explanation:

d is the only accurate one

step-by-step explanation:

so mark-up is 0.4 multiplied by 180 = 72