Answer:
x=3
Step-by-step explanation:
to find the axis of symmetry of a parabola when the equation is of the form
y = ax^2 +bx+c, we can use
h = -b/2a where h is the line of symmetry
a =1 b = -6 and c =-7
h = -(-6)/ 2*1
h = 6/2 =3
The axis of symmetry is in the x direction
x=3
The function (119x + 171) represents the amount, in dollars. Lionel will save 409 $ if he uses Quality Electric for a repair needing 2 hours of labor.
<h3>What is a system of equations?</h3>
A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.
The system of equations are;
p(x) = 68x + 81.
q(x) = 51x + 90.
So,
p(x) + q(x) = 68x + 81 + 51x + 90
p(x) + q(x) = 119x + 171
The function (119x + 171) represents the amount, in dollars, Lionel will save by having Quality Electric handle an x-hour repair instead of Phil’s Appliances.
p(x) + q(x) = 119x + 171
x= 2 hours
p(x) + q(x) = 119 (2) + 171
p(x) + q(x) = 409
Lionel will save 409 $ if he uses Quality Electric for a repair needing 2 hours of labor.
Learn more about equations here;
brainly.com/question/10413253
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Number of outcomes when 1 dice is rolled = 6
Number of outcomes when n dice are rolled = 6^n which is 6 raised to the power n.
So, the number of outcomes when 5 dice are rolled = 6⁵ = 7776
Thus, when 5 dice are rolled there will be 7776 possible outcomes.
So, option A is the correct answer
Answer:
x+2
Step-by-step explanation:
2.4 would be your answer.
