Answer is 75% hopefully I mean I don't really know that much
79, 000
Tip: focus on the number/place you need to round from ( in this case 8) if the number is 4 or below it will stay the same, but if the number is 5 or above it will change by 1 number (in this case it will change from 78, 045 to 79, 000)
Let Jane use 'X' lace.
Then,
Marcus uses '3X' lace [ according to the question]
Here,
X + 3X = 64
4X = 64
X = 16
So, Jane uses 16 laces and
Marcus uses 3*16 = 48 laces
Answer:

Step-by-step explanation:
We have given two function f(x) and g(x)
We need to operate 
Substituting the values in the above format we will get
after opening the parenthesis we will get

We will get after simplification the above expression
Addition of these two functions give us a quadratic expression means an expression with degree or highest exponent two.
Again corresponding angles theorem! These 2 angles are equal.
77=5x+17
5x=60
x=12
Done!
Any questions just leave in the comments.