In an experiment, a researcher manipulates one variable to see how it affects a second variable. the second variable, which is observed for any possible effects, is called the variable.

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?

28 x 12 + 34 = ? it's for a test that if i fail on i will not proceed into the honor roll society i always dreamed of!me! worth 50 !