0.076952 to 3 significant figure

0.0770.

Step-by-step explanation:

That would be  rounded to the  next 3 digits after the second 0.

So it is 0.0770.

(The 7695 is rounded  to 770 because the digit after the 9 is 5, so the 69 is rounded up to 70).

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!