What is the answer to
[x+3y=5
[2x-y=-4

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.

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

What is the solution to the division problem below x3+x2-11x+4/x+4