Which expression is equivalent to 34 ⋅ 3−9?

1 over 3 to the 13th power
1 over 3 to the 5th power
35
313

b.1 over 3 to the 5th power.

Step-by-step explanation:

We are given that an expression

We have to find that which expression is equivalent to given expression

We know that

Using this identity

Then, we get

Using

Hence, option b is true.

b.1 over 3 to the 5th power.

7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.