If the average grade of an english class rose from 70 to 85, what is the approximate percent increase?
the percent increase is approximately 14%.
the percent increase is approximately 17%.
the percent increase is approximately 21%.
the percent increase is approximately 35%.

The percent increase is approximately 21%

Solution:

Given that average grade of an English class rose from 70 to 85

To find:  percent increase

The percent increase between two values is the difference between a final value and an initial value, expressed as a percentage of the initial value.

The percent increase is given as:

Here initial value = 70 and final value = 85

Substituting the values in above formula, we get

Thus percent increase is approximately 21%.

plants store their excess carbohydrate in the form of starch so that it could be used as energy source later on. the excess carbohydrate is converted into starch in the plastid i.e. chloroplast & this process occurs in the presence of sunlight. it is an insoluble polymer of glucose which gets stored in cell organelles named as amyloplasts. in some plants, starch is also stored in roots and embryos.

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step-by-step explanation: