When the value of x is 3, evaluate;

Substitute for the value of x into the parenthesis;

ANSWER:
The expression equals 40 (when x = 3)
Answer:
562.5
Step-by-step explanation:
A = ½ (10 m/s + 35 m/s) (25 s)
I can help but the picture does not load, for some reason it takes me to a page that says enter code. I have no idea what it is but i did not mess with it...
you might want to re-post a new picture just to be safe because that code thing might be something of yours thats personal
The last one since it contains only fractions
Answer:
33% or .33
Step-by-step explanation:
Divide 1/3 = .3333 (repeating). I would round to the nearest hundreths place:
1/3 = .33
For the precentage, multiple 0.33 by 100:
100 * 0.33 = 33%