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[Saad the Paki]

whats the difference between " write an article to your school magazine " AND "write an article to your local newspaper"?

Article to a school magazine has a bit of informal touch (but not completely informal) since u're writing to students of ur age who can relate..
on the other hand Article to a newspaper is completely formal and usually on a serious topic

 

[Saad the Paki]

9 Answer the whole of this question on a sheet of graph paper.
A taxi company has “SUPER” taxis and “MINI” taxis.
One morning a group of 45 people needs taxis.
For this group the taxi company uses x “SUPER” taxis and y “MINI” taxis.
A “SUPER” taxi can carry 5 passengers and a “MINI” taxi can carry 3 passengers.
So 5x + 3y 45.
(a) The taxi company has 12 taxis.
Write down another inequality in x and y to show this information. [1]
(b) The taxi company always uses at least 4 “MINI” taxis.
Write down an inequality in y to show this information. [1]
(c) Draw x and y axes from 0 to 15 using 1 cm to represent 1 unit on each axis. [1]
(d) Draw three lines on your graph to show the inequality 5x + 3y 45 and the inequalities from parts
(a) and (b).
Shade the unwanted regions. [6]
(e) The cost to the taxi company of using a “SUPER” taxi is $20 and the cost of using a “MINI” taxi is
$10.
The taxi company wants to find the cheapest way of providing “SUPER” and “MINI” taxis for this
group of people.
Find the two ways in which this can be done. [3]
(f) The taxi company decides to use 11 taxis for this group.
(i) The taxi company charges $30 for the use of each “SUPER” taxi and $16 for the use of each
“MINI” taxi.
Find the two possible total charges. [3]
(ii) Find the largest possible profit the company can make, using 11 taxis. [1] PLease help me Ill appreciate it

Since there can be a maximum of 12 taxis (a) will be x+y<=12
At least means a minimum of 4 mini taxis so (b) will be y>=4
(c) & (d) are basic graph drawing and shading
For part (e) thr equation to be formed will be 30x+16y ... now what u have to do is use ' trial and error' method.. From the shaded region u have to substitute values of x and y into the equation until u get the LOWEST possible value (only use integer values for x & y ... and the same way in part (f) aswell..
Hope I helped..!