4 children have small toys. The first child has 1/10 of the toys, the second child has 12 more toys than the first, the third has one more toy than the first child, and the fourth child has double the amount of the third child. How many toys are there?

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.

Suppose g(x) = f(x + 3) + 4. which statement best compares the graph of g(x) with the graph of f(x)?