Which of the following best describes the expression 7x+2y?
•the sum of two products, there are two terms
• the product of two sums, there are two terms
• the sum of two products, there are four terms
• the product of two sums, there are four terms

Imagine a new pasture with grass growing on it. every day after the seeds have germinated, the number of blades of grass in the pasture triples. after 18 days, the entire pasture is completely covered in grass. how many days did it take for the pasture to be one-third covered in grass?

Plz help plz give me the answer

Consider the function y = f(x)=3^x the values of f(1/2) and f(1/4). rounded to the nearest hundredth, are__and__ respectively