3, A small computing center has found that the number of jobs submitted per day to its
computers has a distribution that is approximately mound-shaped and symmetric, with
a mean of 85 jobs
and a standard deviation of 5. Where do we expect approximately 95% of the
distribution to fall?
A) between 80 and 90 jobs per day
B) between 70 and 100 jobs per day
C) between 75 and 95 jobs per day
D) between 95 and 100 jobs per day

Ineed ! the person who answers and shows their work on they got the answer first will be marked the !

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.