Complete the solution of the equation. find the value of y when equals -1. -2x-5y=-13
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Since the number is a fraction make a number line using fractions. The inequality sign includes being equal to, so add a solid dot on -5/2 and since x is less than that, draw an arrow pointing to the left.
See attached drawing.
For interval notation since x can be any number less than or equal to -5/2 it would be written as (-∞, -5/2]
c = cost per pound of chocolate chips
w = cost per pound of walnuts.