Elizabeth can type 275 words in 5 minutes. the number if words she types, w, is directly proportional to the length of time she takes to type, t minutes.
a) find the constant of proportionality
b) write an equation that relates w and t
c) how many minutes will it take her to type a 935-word document?

The graph below shows the price of different numbers of mats at a store: a graph is shown. the values on the x axis are 0, 2, 4, 6, 8, 10. the values on the y axis are 0, 21, 42, 63, 84, and 105. points are shown on ordered pairs 0, 0 and 2, 21 and 4, 42 and 6, 63 and 8, 84. these points are connected by a line. the label on the x axis is number of mats. the title on the y axis is price in dollars. which equation can be used to determine p, the cost of b mats?

Let r = 3. what is the value of r + 58?

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?