a journey between 2 towns is exactly 90 km. use a graph with aleast 5 different speed in km/h to model how variation in speed(x) over the journey causes variation in time taken (y) to complete the trip . time should be in minutes​

the amount you'd have after the work is $1.55

step-by-step explanation:

you subtract 95% from $31.

so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

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1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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