Consider the function f(x) 9- x2
x2
- 4
For which intervals is f(x) positive? Check all that apply.
(-0, -3)
(-3,-2)
(-2,2)
(2,3)
(0,3)

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin. how many doctors use brand x aspirin