The first one is a reflection over the x-axis :)
Answer:
$140
Step-by-step explanation:
Total Amount of chocolate = 100 Pounds
Amount of chocolate in one box = 1 1/4 Pounds = 5/4 Pounds
Number of boxes = 100/(5/4) = 80 boxes
Cost of one box = $1.75
Total selling price = 80×1.75 = 140
The total selling price for all the boxes of chocolate is $140
Last one is your answer.
X cannot be repeated, but y can

Cross-multiplying and rearranging, we get:

or written without using latex:
k^2 = h^2 - 3mq
Can you finish now?