An advisor to the researcher suggests using a randomized block design. Should the researcher block on type of vehicle (compact cars, full-size cars, and trucks) or number of miles previously driven (0–2,000 miles; 2,000–4,000 miles; and 4,000–6,000 miles)? Explain your choice of blocking variable.

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

the answer is d

step-by-step explanation:

sorry i really don't know what tiles and steps you are referring to

step-by-step explanation: