Emmy learned to sing a total of 12 pieces over the course of 6 weeks of voice lessons. How many weeks of lessons will Emmy need before she will be able to sing a total of 14 pieces? Assume the relationship is directly proportional.

7 weeks.

Step-by-step explanation:

It took Emmy six weeks of vocal lesson to learn twelve pieces. If you divide 12÷6 it equals 2 or if you multiply 6×2 it equals 12, just like that if you divide (14÷7=2) or multiply (7×2) you will get the answer. you can also divide first and then multiply to check the answer/vice-versa.

your answer is 23/2 - 13.5

step-by-step explanation:

7/2 evaluates to

multiply x and 4.5

multiply x and 1

the x just gets copied along.

the answer is x

x

4.5*x evaluates to 4.5x

multiply 3 and 4.5x

multiply 1 and x

the x just gets copied along.

x

4.5*x*3 evaluates to 13.5x

7/2-4.5*x*3 evaluates to

  + 8 =

the answer is

7/2-4.5*x*3+8 evaluates to

answer: 5100 just subtract

step-by-step explanation: