Simplify:

2(d + 3) + 3(d – 3)
A. –5d – 1
B. 5d – 3
C. 5d + 15
D. 6d – 3

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3

Factor the polynomial. b^2 + 4b + 4