Answer:
The percentage increase from the restaurant price to the restaurant cost = 269.56%
Step-by-step explanation:
An average price of per meal for the customer= $17
An average cost of per meal for the restaurant= $4.60
Difference in price = 17-4.60
Difference in price = $12.4
So, the percentage increase from the restaurant price to the restaurant cost =
The percentage increase from the restaurant price to the restaurant cost = 269.56%
Answer:
Step-by-step explanation:
given that a bacteria culture initially contains cells and grows at a rate proportional to its size.
If P be the size then growth rate
where k is constant of proportionality
separate the variables as
If after 1 hour population is B (say)
then k = ln B - ln A
Using this
P(t) = 
b) P(e) = 
c) Rate of growth = 
Unless you give B value, d cannot be solved
Answer:
j = 0 or j = 30
Step-by-step explanation:
j² - 30j = 0
Factorise j out of both terms on the left side.
j (j-30) = 0
Apply zero product rule.
j = 0 or j-30 = 0
Find the value of j.
j = 0 or j = 30
Answer:
The equation of the quadratic graph is f(x)= - (1/8) (x-3)^2 + 6 (second option)
Step-by-step explanation:
Focus: F=(3,4)=(xf, yf)→xf=3, yf=4
Directrix: y=8 (horizontal line), then the axis of the parabola is vertical, and the equation has the form:
f(x)=[1 / (4p)] (x-h)^2+k
where Vertex: V=(h,k)
The directix y=8 must intercept the axis of the parabola at the point (3,8), and the vertex is the midpoint between this point and the focus:
Vertex is the midpoint between (3,8) and (3,4):
h=(3+3)/2→h=6/2→h=3
k=(8+4)/2→k=12/2→k=6
Vertex: V=(h,k)→V=(3,6)
p=yf-k→p=4-6→p=-2
Replacing the values in the equation:
f(x)= [ 1 / (4(-2)) ] (x-3)^2 + 6
f(x)=[ 1 / (-8) ] (x-3)^2 +6
f(x)= - (1/8) (x-3)^2 + 6
Answer:
the second one
Step-by-step explanation:
