Answer:
20% discount means
Previous price was $100 and now it’s
(100-20)=$80
$100 is now $80
So $1 is now =80/100 =$ 0.8
So $45 is now = 45x0.8 = $36
So she will save $45– $36 = $9
Step-by-step explanation:
The parent function is the simplest version of a member of a family of functions.
In this case, the parent function y= |x|
y= |10x-2| - 7
The vertex will be 2/10, -7, or (1/5,-7)
The axis of symmetry will be x= 1/5
now, bear in mind that, the population is doubling every half-hour, so, in 3hrs, it doubled 6 times, thus, our time is 6 for 3hrs, since the cycle is every 30mins
now, for 24hrs? well, that's 48 half-hours, thus t = 48