Aflying disk is thrown into the air from a height of 25 feet at time t= 0. the function that models this situation is h(t) = -16t2 + 75t + 25, where tis measured in seconds and h is the height in feet. what values of the best describe the times when the disk is flying in the air?
a.0 b.0 c. all real numbers
d. all positive integers

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

Lv beethoven software supplies customized software to a managed healthcare system. lv beethoven software's costs for the software is $1,723,000. lv beethoven software sells the software to the healthcare system for $3,816,981.10. overhead expenses are estimated at 47% of the selling price. what is lv beethoven software's net profit to the nearest dollar?

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?