10. A student studied 18 hours in 7 days, if he wants to study average 2 hours each day for 14 days. How many hours he needs to study for next 7 days?

2 x 14 = 28

28 - 18 = 10

He needs to study for 10 hours that week or, about one and half hours per day.

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step-by-step explanation:

hopefully im right

r(0,90)(x,y) . t(-5,0)

last option

step-by-step explanation:

∆def to ∆d"e"f"

- rotate 90 counterclockwise degrees

- then translated 5 to the left (x --> x - 5)

answer is the last option