Solve the following equation for w: 7(w + 3) = 16 + 10(w − 4) check your solution. must show your work to receive full credit.

w = 15

Step-by-step explanation:

7(w + 3) = 16 + 10(w − 4)

7w + 21 = 16 + 10w - 40

7w + 21 = 10w - 24

-3w = - 45

  w = 15

vertex of the parabola

Step-by-step explanation:

v(t) = −2x²+ 22x + 280

v = value of her investment

t = time in weeks.

(a) What key feature of the function tells us when her investment was worth the most?

worth the most = highest value, so at the vertex of the parabola.

xvertex = -b/2a

yvertex = -Δ/4a