Which expressions are equivalent to 16x3/4

(01.04 mc) an ice sculpture is melting because of heat. assuming its height changes bynegative 5 over 32m every hour, what will be the change in height after 4 hours?

Issof claims that the scale factor is 1/2. which statement about his claim is correct

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²