Which problem could be solved by evaluating the expression 7×(−3)?

a pool is being filled. the water level rises 3 centimeters every minute. what is the change in water level after 7 minutes?

amber removes 7 pounds of apples from a barrel. then she uses double this amount to make apple pies. how many pounds of apples does she use?

a cold front comes in and causes the temperature to drop 3 degrees every hour. what is the change in temperature after 7 hours?

jarod has $7 in his pocket. he gives $2 to his mother. how much does he have now?

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step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2

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step-by-step explanation:

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step-by-step explanation:

answer4 to the second power is 16

and 4 to the third power is 64,