Suppose r varies directly with t and that r=40 when t=5. what is the value of r when t=11?

Jane moves from a house with 71 square feet of closet space to an apartment with 45.44 square feet of closet space. what is the percentage decrease of jane’s closet space?

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?

Which spreadsheet would be used to compute the first nine terms of the geometric sequence a^n=32•(1/2)n-1