Answer- You can get 10 Small rafts
12 x 100+ 1200
1600-1200=400
400/40 =10 Rafts
Answer:
Estimated Answer=
Exact Answer= 
Step-by-step explanation:
Steady speed of the object =10 and one tenth km/h = 
Distance to be Covered=4 and nine tenths km =
km
To the nearest integer,
Steady speed of the object = 10 km/hr
Distance=5km

=
The estimated answer is 1/2 hr.
Next, we determine the exact answer.

The exact time taken is 
62 I hope it helps thank you
Since we are given that the relationship between x and y
is linear. Therefore this means that the given equation takes the form of:
y = m x + b
where,
b is the y intercept of the equation
m is the slope of the equation
However we should take note that the slope m is directly
proportional to the coefficient of correlation. Since our coefficient of
correlation is negative, this only means that the value of y is decreasing with
increasing x, hence plot of y and x is descending with increasing x.
Furthermore, this also tells that for every 1 unit increase of x, there is a
0.75 units decrease of y.