- Need help with math question 0.40b+1.25s=150?

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Expression? How do you calculate how much your grade will go up? If the function f(x)=-x^4+2x^2-1 odd, even, or neither? Why? How much resistance and tolerance does a resistor that has the color bands red, violet, orange, gold have? Show your calculation.? Suppose that A ⊆ B ⊆ V .
(a) Prove that span(A) ⊆ span(B).
(b) Prove that if B is linearly independent then A is linearly independent.?