7. rent-a-car prince compact cars for a fixed amount per day plus a fixed amount for each mile driven. bientot rented a car for 6 days drove it 550 mi and spent $337. lisa rented the same car for 3 days drove 350 miles and spent $185 what is the charge per day in the charge per mile for the compact car?

9. solve the system of linear inequalities.
- 4x + 3y = 15
- 6x - 4y < 12

10. solve the system of inequalities (no. you may need to adjust your skill on the coordinate plane)

-7x+3y≤15
6x-5y< 12

If charge per day =x

and charge per mile =y

6x + 550y = 337

3x + 350y = 185

multiple the second equation by 2

6x+700y=370

subtract the first equation from this equation

150y=33

y=0.22

Now we plug the y back in to one of the initial equations to get the value of x

3x+350(0.22)=185

x=36

Charge per day is $36 and charge per mile is $0.22

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Step-by-step explanation:

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies

32

step-by-step explanation: