Michael pays $30 to enter a state fair, plus $4 for each ride. Which of the following equations represents his total cost? A. y=
2 answers:
Answer:
Step-by-step explanation:
Given : Michael pays $30 to enter a state fair, plus $4 for each ride.
To Find: Which of the following equations represents his total cost?
Solution:
Let x be the number of rides .
Cost of 1 ride = $4
So, cost of x rides = 4x
We are given that Michael pays $30 to enter a state fair
Entry fee = $30
Let the total cost be y
So, total cost =
Hence the equation represents his total cost is .
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Answer:
Step-by-step explanation:
Given that in 1987, the population of country A was estimated at 87 million people, with an annual growth rate of 3.5%
Thus the equation for population for country A would be
The 1987 population of country B was estimated at 243 million with an annual growth rate of 0.6%.
So equation for population for country B would be
where t = time in years and P in millions
a) P(A) = 2*87 when
Take log and solve
ln 2 = 0.005 t
t = 138.63
Thus after 138 years population will double for A
b) P(A) = P(B) when
Approximately after 35.5 years the populations of both countries would be equal.
we are given
Firstly, we will factor numerators and denominators
we can see that
n^2 -6 is factor on both numerator and denominator
so, it will get cancelled
and n^2 -6 can not be equal to 0
so, one of restriction is
we can simplify it
we know that denominator can not be zero
so, option-B.......Answer