Simplify to create an equivalent expression.

−3z−(−z−2)

A) −4z+2
B) −2z−2
C) −2z+2
D) 4z+2

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

Can someone me and do the problem plz so i can understand it more better

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are: