Points A, B and C lie on a circle, centre O.
Angle AOC = 142°.
Find the value of y.

Simplify the expression. -2/5(10+15m-20n)

Samantha is growing a garden in her back yard. she spend $90 setting up the garden bed and buying the proper garden supplies. in addition, each seed she plants cost $0.25. a. write the function f(x) that represents samantha's total cost on her garden. b. explain what x represents. c. explain what f(x) represents. d. if samantha plants 55 seeds, how much did she spend in total?

What’s the volume of the triangular prism?