40% of the equipment in the class are hockey sticks
12+8=20
8/20 × 100=40
Answer:

Answer D is correct
Step-by-step explanation:
<em>Twice</em><em> </em><em>a</em><em> </em><em>certain</em><em> </em><em>number</em><em> </em><em>is</em><em> </em><em>5</em><em>8</em>
<em>
</em>
<em>Four</em><em> </em><em>times</em><em> </em><em>that</em><em> </em><em>number</em><em> </em><em>will</em><em> </em><em>be</em>
<em>
</em>
Answer:
x = 7
Step-by-step explanation:
Remember that the axis of symmetry (a vertical line that passes through the vertex) is exactly halfway between the two x-intercepts. Thus, the x-coordinate of the vertex is 7.
Answer:
5
Step-by-step explanation:
y^1 = 5^1 (y = 5)
Anything raised to the power of 1 is just itself.
So, 5^1 = 5
5 + 8s = 15 + 3s
8s - 3s = 15 - 5
5s = 10
s = 10/5
s = 2 <=== they will charge the same at 2 sq ft