Question 1

What formula corresponds to this graph?

Accepted Answer

Total cost in euros = 50 + 20 x Number of hours

Answer

Number of hours = 20 + 50 x Total cost in euros

Answer

Number of hours = 50 + 20 x Total cost in euros

Answer

Total cost in euros = 20 + 50 x Number of hours

Question 2

What formula corresponds to this graph?

Accepted Answer

Gap in mm = 4 - 0.1 x Temperature in Celsius degrees

Answer

Temperature in Celsius degrees = 4 - 0.1 x Gap in mm

Answer

Gap in mm = 4 - 0.5 x Temperature in Celsius degrees

Answer

Gap in mm = 40 - 0.5 x Temperature in Celsius degrees

Question 3

Shorten the formula.

Accepted Answer

g = 4 - 0.1t

Answer

m = 4 - 0.1c

Answer

g = 3.9t

Answer

g = 4 - 0.1 x t

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