2 Points
Which of the following is not a characteristic of both surveys and
experiments?
A. The data collected might be studied for patterns.
B. Data are collected about a population.
O
O
C. The researcher selects a sample of the population to study.
O
D. The researcher exercises direct control over at least one variable.

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.

v = 1/3 a^2h

step-by-step explanation:

the volume is 1/3 a^2h.

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2