1) Melissa will participate in a charity walkathon. Her mother will donate $10 for Melissa's

participation plus an additional for each mile that Melissa walks.

a) If Melissa walks miles, what will be the amount of her mother's donation?

b) Write an equation for, the amount in dollars, of Melissa's mother's donation as a function of

the number of miles Melissa walks.

c) If the donation is , how many miles did Melissa walk?

d) Melissa wants her mother to donate no more than . What is the greatest number of miles she

can walk?

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

Type the correct answer in each box. use numerals instead of words. if necessary, use / fir the fraction bar(s). the graph represents the piecewise function: h

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.