Vito buys a twin mattress that is 39 inches wide and 75 inches long. he wants to buy a quilt to cover the top of the mattress. which expression can he use to find the area of the top of the mattress?
39 + 75
2(39) + 2(75)
39 × 75
39(75) + 39(75)

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

You coordinate volunteers for litter cleanup in local parks. your spreadsheet lists drivers and the number of seat belts in each driver’s car. the spreadsheet calculates the number of drivers (d) and the total number of seat belts (s). you want to know the maximum number of volunteers, besides drivers, that can be transported to the park in a single trip given that each person must have a seat belt of their own.

Consider the function cot x. which of the following are true? select all that apply.