The function t(n)=8n represents the number of tires t(n) that are needed for n trucks. how many tires are needed for 25 trucks?

a. 32 tires
b. 150 tires
c. 200 tires
d. 250 tires

tell whether the sequence is arithmetic. if it is, what is the common difference?

2, 7, 13, 20,

a. yes; 5
b. yes; 6
c. yes; 2
d. no

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Solve the following system of equations express your answer as an ordered pair in the format (a,b) with no spaces between the numbers of symbols 5x+2y=22

The correlation coefficient between the number of students and marks obtained in end semester exam. (13 marks) give the statistical meaning of the relationship between the number of students and marks b. obtained in end semester exam. (3 marks) draw the number of students and marks obtained in end semester exam scatter diagram c. (4 marks) check list write your name and id corectly write the question number properly use your own calculator. show all the steps to solve the problems. use the correct formula. answer in provided time. don't use your mobile for any purpose. write your answer up to two decimal places