Use addition to solve the linear system of equations. show all of your work.

x = y + 3
y = -4x - 3

What is the standard form of -5x^2+2x^4-11+x^3+3x

The box plot shows the number of raisins found in sample boxes from brand c and from brand d. each box weighs the same. what could you infer by comparing the range of the data for each brand? a) a box of raisins from either brand has about 28 raisins. b) the number of raisins in boxes from brand c varies more than boxes from brand d. c) the number of raisins in boxes from brand d varies more than boxes from brand c. d) the number of raisins in boxes from either brand varies about the same.

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?