exam Maths Puzzle Numerical Ability

Graph function and state range and domain.

y=0.3x

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exam Other Question

i dont want to know the answer i just want to know what i need to do to get the answer

Simplify:

1+2i
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2-3i Kathy and Jan drove a total of 497 miles in 10.4 hours. Kathy drove the first part of the trip and averaged 45 miles per hour. Jan drove the remainfer of the trip and averaged 55 miles per hour. for what length of the time did Kathy drive?