2x-4 is less then or equal to 12

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.

Can someone me with this graph problem by the way i need to know the answers by today since this assignment is due ! !

Agrasshopper weighs 0.89 grams. express the grasshopper’s weight in scientific notation.