The grades in a particular class are normally distributed so that 99.7% of grades fall into a certain range. The class has a mean grade of 77% and a standard deviation of 3%. Select all grades that fall into this range.

There may be more than one correct answer. Select all that apply.

a. 90
b. 70
c. 68
d. 66
e. 85
f. 88
g. 60

Arianna is buying plants for her garden. she buys 15 flowering plants for $96. pink flowering plants sell for $8, and purple flowering plants sell for $5. how many pink flowering plants did arianna buy? i figured out the answer! the answer is 7. 8x +5y = 96 plug in 7 for x 8 (7) + 5y = 96 56 + 5y = 96 subtract 56 from both sides 5y/y = 40/5 y = 8 she bought 7 pink and 8 purple plants

Asequence is defined recursively using the formula f(n + 1) =f(n) - 5. which sequence could be

How do i take any fraction and make it into a decimal or percentage?