The width of a rectang:a is half of its length. If the length is 8 cm, what is the perimeter of the rectangle?

Three times the sum of a number and seven is negative thirty-six. what is the number?

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)