Hello!
We can see that Henry(H) makes a flat fee of 125. Therefore, he will have a +125 on his equation. The only one that does this is A. As you can see, it models all of our given information perfectly.
Therefore, our answer is A.
I hope this helps!
X will equal 5
y will equal 0
You have 12 girls out of 32, so that's 20 boys. Take your amount of boys divided by your total number. So, 20/32 = .625
You want a percentage, so .625 x 100 = 62.5% boys
The 30/60/90 right triangle is the biggest cliche in trig. We recall the sides come in ratio 

First x:


Next y:


Choice C