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BlackZzzverrR [31]
3 years ago
14

Can you please help with this

Mathematics
1 answer:
sleet_krkn [62]3 years ago
8 0

Answer:

Exercise 1 : a. 4 ; b. -4

Exercise 2 : a. +7 positive/right ; b. -7 ; c. -7 negative/left

Step-by-step explanation:

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3 years ago
A psychologist wants to know if the difficulty of a task influences our estimate of how long we spend working at it. She designs
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