Answer:
the first option, I believe is correct
Step-by-step explanation:
Since multiplying by 0.5 is the same as dividing by 2, the problem is described by the sentence
"Half the sum of a number and 40 equals 200"
Answer:
C and D give rational numbers, as the square root of 49 is ±7 and the square root of 100 is ±10.
First, you would need to create an equation for this problem. Let x represent the unknown percentage.

=

Next, you would cross multiply.
25x = 1,700
Now, all you would have to do is isolate the x. To do this, you would divide both sides by 25.
x =
68%17 is 68% of 25. I hope this helps!
f = 38b - 122, since 38b means 38 times the value of b, then 122 is subtracted from that total giving you f.