Totalcost=ridescost+admissioncost
ridescost=numberofrides times cost per ride
ridescost=25*1.25=31.25
totalcost=43.75
43.75=31.25+admission
minus 31.25 both sides
12.5=admision
a.
y=1.25x+12.5
b. y is cost and x is number of tickets purchsed
c. math
The amount of drugs that will be left after 12 hours is 17.42 mg provided Sarah takes 550 mg of an antibiotic every hour.
<h3>What is exponential decay?</h3>
Exponential decay can be described as a reduced amount of an original substance by a definite percentage over a period of time. It can be determined by using the formula:

where;
- y = total amount,
- a = initial amount = 550 mg
- r = the growth rate = 0.25
- t = number of growth periods = 12 hours

y = 17.42 mg
Therefore, we can conclude that the amount of drugs that will be left after 12 hours is 17.42 mg.
Learn more about the exponential decay model here:
brainly.com/question/12940982
Answer:
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Using the distance formula:-
Distance = square root [ (17 -7)^2 + (-6 - -12)^2 ]
= square root ( 136)
= 11.66 answer
3(x+2) < 10 //// that should be right!!