Answer: 140$
Step-by-step explanation: 15$ times 8 meals plus 20 dollar fee eaquals 140$
Vertex is located over the center of the base of a regular pyramid.
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What is Vertex Angle?</h3>
Vertex angle is defined as the angle formed by two lines or rays that intersect at a point. These two rays make the sides of the angle.
Here, Vertex is the point which is located over the center of the base of a regular pyramid.
Learn more about Vertex angle from:
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Answer:

Step-by-step explanation:
Hi!
Lets call:
T = temprature of the object
T₀ = temperature of surroundings
t = time
The rate of change of T is its derivative with respecto to time. If T > T₀, the object looses heat, so T decreases. Then, being k > 0:

In this case T₀ = 70ºF and k = 0.05/min. Then the differential equation is:

Xy=30
x=6/11
6/11y=30
Divide by 6/11 on both sides
y=55