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ashleyrturner08
26.04.2021 •
Mathematics
In RST, RS = 15, RT = 120 and ST = 17. Which is to the nearest tenth
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Ответ:
answer:
b: hannah charges a $7.00 initial fee
step-by-step explanation:
jaya's plan:
jayna charges $10 for the first hour, and $3 for each additional hour she babysits.
let she did job for h hours.
so, cost for first hour = $10
so, remaining hours = h-1
cost for each additional hours = $3
so, cost for (h-1) hours = 3(h-1)
so, jayna,s plan equation for h hours =
hannah's plan equation =
where d = dollars charged
h = hours
a)if they babysit for 5 hours, jayna will earn more
jayna,s plan equation =
substitute h = 5 hours
so, jayna's earning =
hannah's plan equation =
substitute h = 5
so, hannah's earning =
since jayna is earning less .
so, option a is incorrect.
b)hannah charges a $7.00 initial fee
hannah's plan equation =
charges for h hours = 7h
so, charges for 1 hour = 7
thus option b is correct.
c) if they only babysit for 1 hour, hannah will earn more
jayna,s plan equation =
substitute h = 1 hours
so, jayna's earning =
hannah's plan equation =
substitute h = 1
so, hannah's earning =
since hannah is earning less .
so, option c is incorrect.
d)jayna charges a lower hourly rate than hannah
jayna first hour earning = $10
hannah first hour earning = $7
since jayna charges a higher hourly rate than hannah.
so, option d is incorrect.
hence hannah charges a $7.00 initial fee compares the both.