Donna, Chris, and Austin have a total of $93 in their wallets. Donna has $7 more than Chris. Austin has 3 times what Donna has. How much do they have in their wallets? TYPE YOUR WORK IN THE BOX BELOW.     NO WORK = NO POINTS                   NO CREDIT FOR GUESS & CHECK a.  Clearly assign an algebraic expression to each person (use only ) b.  Write an algebraic equation modeling the problem  NO EQUATION = NO POINTS      c.  Solve d.  Clearly write out your answer(s).

READ THE FOLLOWING CAREFULLY On exams, you will be required to also upload your work – mainly for partial credit on questions you did not type in work.  This question is here to practice this. You can alert the proctoring service (and instructor) that you are DONE ANSWERING QUESTIONS and ready to: Get your phone. SCAN and UPLOAD your work. SUBMIT the exam. Do NOT edit your work. STAY ON CAMERA while completing your scanning and uploading. Scan your work into a SINGLE pdf document.  Be sure to “keep scanning” so you create a SINGLE pdf. Email this scan/pdf to yourself.  Save the scan/pdf.  MAKE SURE you know where you saved it – and rename it.  Ex:  Quick Quiz Your Name Upload this Scan into this question. Submit the Quiz DO NOT try to upload pictures, jpegs or multiple files.  It must be ONE SINGLE PDF file.

Please match the steps of the PCR technique with the statements that most accurately describe them.

A(n) _______ solution has a higher concentration of water and lower concentration of solute than the cell placed in the solution.

In the yeast fermentation experiment, what is being produced to cause the air bubble at the top of the tube to increase over time?

If a sperm cell contains 8 chromosomes, it comes from an animal that has ______

A student measured the weight of 10 male rats fed junk food compared to 10 male rats fed a healthy diet. The average weight of each group can be seen in the table below. What important variable did the student hold constant when she designed this experiment?   Weight in ounces Weight in kilograms Rats fed junk food 21.1 ? Rats fed healthy food 16 ?

Why do you think it is a good idea to soak wilted lettuce in cool water before serving it?

A(n) _______ solution has a lower concentration of water than the cell placed in the solution.

Imagine that you wish to compare two different diets that will be fed to tadpoles raised in a lab. One diet is a meat-based fish food, and the other is the traditional diet of boiled lettuce. You want to see if the meat-based diet will be associated with an increase in the average weight of the tadpoles. In your experiment you keep all other factors, such as tadpole density per pan, temperature, pH, and the amount of food the same. The only difference between your control and experimental groups is the type of food the tadpoles receive. Which is a good hypothesis for this tadpole experiment?