The graph of f(x) = x is transformed to g(x) = x + 1 - 7. On which interval is the function decreasing? (- 0,-7) (-0, -1) (2001) (-0,7)

Ametalworker has a metal alloy that is 30? % copper and another alloy that is 55? % copper. how many kilograms of each alloy should the metalworker combine to create 90 kg of a 50? % copper? alloy?

Anyone know? will mark brainliest if you're correct!

Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4