Plz alex paid $10.85 for a new shirt. this amount included a tax of 7.5%. what was the cost of the shirt before tax?

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

What is the prime factorization of 23 ?me with this question

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.