The table shows the cost of books at our school library book sale. Do the data in the table show a constant of proportionality. If so, what is the constant of proportionality, k= y/x? A: 2
B: 2.5
C: 2/5
D: there is no constant of proportionality.

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Simplify 24÷(-2)(3)+7 a. -29 b. 3 c. 11