3. The table shows the lowest temperatures of several cities.
2 answers:
Please check attached vertical number line.
(a) The temperature differences are listed below:
Between Cities Temperature difference
Smithton and
Hedgeburough 2.5 - (-1.1) = 2.5 + 1.1 = 3.6
Hedgeburough and
East Bunting - 1.1 - (- 0.5) = - 1.1 + 0.5 = -0.6
East Bunting and
Smithton 2.5 - (- 0.5) = 2.5 + 0.5 = 3
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Answer:
6
Step-by-step explanation:
The expression can be rearranged to ...
b = 3 -9/(a+5)
In order for b to be an integer, (a+5) must be an integer divisor of 9. There are exactly 6 of those: ±1, ±3, ±9.
The attached table shows the values (a, b) = (x₁, f(x₁)).
