Answer:
D.) x = 3
Step-by-step explanation:
4 + 3x = 2(3x - 7) + 9
4 + 3x = 6x - 14 + 9
3x - 6x = 9 - 14 - 4
-3x = -9
x = -(-9)/3
x = 9/3
x =3
b. Amanda takes out 50% of the nickels in the jar on Friday and adds a number of nickels that is equal to 30% of the original number of nickels in the jar on Monday. There are 20% fewer nickels in the jar after Monday than before Friday.
c. Amanda adds 50% of the original number of nickels to the jar on Friday. The number of nickels Amanda takes out on Monday is equal to 30% of the new number of nickels. There are 20% more nickels in the jar after Monday than before Friday.
d. Amanda adds 50% of the original number of nickels to the jar on Friday. The number of nickels Amanda takes out on Monday is equal to 30% of the original number of nickels. There are 20% more nickels in the jar after Monday than before Friday.
Math