Answer:
f(0) what ? i cant read the formulla of it
As per the problem we have
250g of cheese costs £3.60.
and we have been asked to find how much will 350g cost?
Since , 250g of cheese costs £3.60.
So 1g of cheese will cost
£
Hence 350g of cheese will cost
£
On simplification, we get
350g of cheese will cost=£5.04
To check the answer, sub in 67 for x and 25 for y in both equations...because for it to be a solution, it has to satisfy both of the equations.
(67,25)...x = 67 and y = 25
x + y = 92
67 + 25 = 92
92 = 92 (correct)
y = 3x - 4
25 = 3(67) - 4
25 = 201 - 4
25 = 197 (incorrect)
so (67,25) is NOT a solution to this system of equations because it does not satisfy both of the equations
<span>Estimate 299 = 300
</span><span>Estimate 388 = 400
so sum:
300 + 400 = 700
answer
700</span>