Please answer questions

Solve the equation using the quadratic formula. x2 + 4x = 21 The solution set is {D}. (Simplify your answer. Use a comma to separate answers as needed.) Let r represent the following statement. r: One swims fast. Express the statement One does not swim fast symbolically. The statement is expressed symbolically as D. Use the accompanying Venn diagram, which shows the number of elements in region II to answer the following problem. U If n(A) = 32, n(B) = 35, and n(U) = 65, nd the number of elements in each of regions I, III, and IV. Region I has element(s). Region III has |:| element(s). Region IV has D element(s). The principal represents an amount of money deposited in a savings aooount subject to oompound interest at the given rate. A. Find how much money there will be in the account after the given number of years. B, Find the interest earned. A. The amount of money in the account after 5 years is $ (Round to the nearest hundredth as needed) B, The amount of interest earned is $ . (Round to the nearest hundredth as needed.) Principal $8500 Rate 5% Compounded quarterly Time 5 years Use the Venn diagram to represent the set B' in roster form. 24 26 MD} (Use a comma to separate answers as needed.) A math tutor working with a small study group has classified students in the group by whether or not they scored 95% or above on each of three tests. The results are shown in the Venn diagram to the right. Exam 1 Exam 2 2 95% 2 95% Use the Venn diagram to represent the set of students who scored 95% or above on exam 2 and not on exam 3 in roster Gus Ben form. Lon Al Jen Ken Hui Pat Roz Don Oli Eva Flo Cam Exam 3 Ny 2 95% Mel Choose the set of students who scored 95% or above on exam 2 and not on exam 3. O A. {Ken, Hui, Roz} O B. {Ben, Al} O C. {Flo, Cam, Ny, Mel} O D. {Ben, Al, Ken, Hui, Roz}