2. write an equation to solve the following. show all your work, including the steps for solving the equation and checking your answer. clearly state your answer. the perimeter of a rectangular photo is 72 cm. the length is twice the width. what are the length and width of the photo? (hint: the formula for perimeter is 2w + 2l = p where w is the width, l is the length, and p is the perimeter.)

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Consider the graph of the exponential function y=3(2)×