Omg it is so hard i think it is 60 maybe idk Ф∞∨≥,,
20× 8 = 160
160 + 2x > or = 500
-160--------------- -160
2x > or = 340
÷2------------÷2
x > or = 170
She has to sell at least 170 cupcakes to make $500 in profit.
Hope this helps!
When it hits the ground, then h=0
find the xintercept or in this case the tintercepts
c=76
v=135
h=-16t^2+135t+76
use quadratic formula
ax^2+bx+c=0
x=

a=-16
b=135
c=76
x=

x=

x=

aprox
x=-0.5297 or 8.967
exclude the negative root since you can't have negative time
means that it takes 8.97 seconds to hit the ground
<u>Let's take this problem step by step:</u>
<u>To find the ordered pair of the system:</u>
⇒ must set both equations equal to each other
⇒ and solve for 'x'
<u>Let's solve:</u>

<u>Let's find the x-values:</u>

<u>Let's find f(x)'s value for each 'x':</u>
<u>Answer: (4, 11), (-4,27)</u>
Hope that helps!
#LearnwithBrainly
Answer:
10
Step-by-step explanation:
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