So, 4 x 3 is 12, so 4 blades cost 79.74 x 3 (because every turbine has 3 blades each) is 318.96
2 x -6 equals 0. add 6 to both sides. divide both sides by two. x equals 3
N=3 because when you’re multiplying two numbers with a power, you add them to get your answer. so it would be 4^6•4^3=4^9 because 6+3=9, making the only possible value of n, 3.
64 and 28 have a GCF of 4, since 64 = 4 x 16, 28 = 4 x 7, and 7 and 16 have no factors other than 1 in common. Knowing that, we can rewrite 64 + 28 as
4 x 16 + 4 x 7
and then use the distributive property to rewrite it again as
4 x (16 + 7)
