Ill mark brainilest if correct What is 221,000,000,000,000,000,000 expressed in scientific notation?
2.21 × 1021
2.21E20
2.21E21
2.21E-20
2.21 × 10-21
2.21 × 10-20
2.21 × 1020
2.21E-21
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When the ball has traveled a distance of

Agroup of randomly selected apple valley high school students were asked to pick their favorite gym class. the table below shows the results of the survey. there are 528 students at apple valley high school. gym class number of students racquet sports 1 team sports 9 track and field 17 bowling 13 based on the data, what is the most reasonable estimate for the number of students at apple valley high school whose favorite gym class is bowling? choose 1 answer a. 9 b. 13 c. 119 d. 172

Problem ann increased the quantities of all the ingredients in a recipe by 60\%60%. she used 8080 grams (\text{g})(g) of cheese. how much cheese did the recipe require?