Doen's short is 4 times larger than helen's but costs half as much. Deon's shirt costs $9.35.How much is helen's short?

Ican figure out 20 shares multiply by $117.98 =2359.6920 shares multiply by $124.32=2486.40then take 40 shares multiply by $128.48=5139.20after that i'm lost any be greatly appreciated.

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?

Find the zeros of each function. f(x) = 6x^2 - 7x - 20