A restaurant uses a computer to identify their 400 most loyal customers from its database and then surveys those customers to find out how they like their service. Identify the population and determine whether the sample is random or biased.

The sample is Biased

Step-by-step explanation:

When a survey is being taken, bias is when results are manipulated to intentionally or unintentionally get certain results. This survey is biased because the restaurant is only surveying loyal customers, who all most likely like the restaurant

A way to make the survey random would be by asking multiple different customers that aren't loyal or regular.

-10i^2-4i

step-by-step explanation:

evaluate for p=2,q=5i

(2−4)(2+5i)i

(2−4)(2+5i)i

=−10i2−4i

b.-4 units

all you   do is count how many times you move