She can last 12 whole weeks and a few days. Hope this helps :)
Answer: X= -7
Step-by-step explanation: A negative time a negative is a positive so -12x-7 is equal to 84. 84 plus 16 is equal too 100.
Answer:

or

Step-by-step explanation:

I'm going to reduce -3/6 to -1/2 by dividing top and bottom of -3/6 by 3.

Now I'm going to get rid of the negative exponent by moving x to the top; so -1/2 will change to 1/2 instead when doing this:



Please let know if I read the problem right:

Answer:
x=3
Step-by-step explanation:
2(x+1)=x+5
Use the distributive property to multiply 2 by x+1.
2x+2=x+5
Subtract x from both sides.
2x+2−x=5
Combine 2x and −x to get x.
x+2=5
Subtract 2 from both sides.
x=5−2
Subtract 2 from 5 to get 3.
x=3