Find d^4y/dx^4 given dy/dx = x^4 + x^3 + x^2 + x

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

Find the amplitude of a sinusoidal function that models this temperature variation