Answer:
To find the answer we only need to know,
Total no.of girls and Total no.of right handed girls.
So,
Total no.of right handed girls = 7/8
Total no.of girls = 8/8 (as given in question)
Total no.of left handed girls is,
(Fraction of total no.of girls) - (Fraction of total no.of left handed girls)
= 8/8 - 7/8
= 1/8
∴ 1/8 of the girls in the school are left handed.
Answer:
Part a) 
Part b) 
Part c) Standard Daily Rate plus Mileage plan
Step-by-step explanation:
Part a) What would be the cost of the Standard Daily Rate plus Mileage plan?
Let
y ----> the total cost
x ----> the number of kilometers
we have that
For a Luxury car

For x=400 km
substitute


Part b) What would be the cost of the Unlimited Mileage plan?
we know that
The Unlimited Mileage plan for a Luxury car is $105 per day (see the table)
The trip are three days
so
To find the total cost multiply $105 by 3

Part c) Which is the better plan?
Compare

therefore
For this trip the better plan is the Standard Daily Rate plus Mileage plan
Ok so ummmm idk how to speck in that but well ummmmm idk
Answer:
Now, 3x 2+x+5⩾0
This is because b² −4ac=1−4×5×3
=−59 (roots are imaginary)
3x²+x+5=(x−3)² =x²+9−6x and x−3⩾0
2x²+7x−4=0
2x²+8x−x−4=0
2x(x+4)−1(x+4)=0
(2x−1)(x+4)=0
x= 1/2 and−4 but x≥3
∴ No solution.
lol hehehe