HELP PLEASE!!

If –8x + 2y = -4 is a true equation, what would be the value of 40x – 10y?

Match the one-to-one functions with the graphs of their inverse functions.

Fill in the missing exponents in each box and show how you found the answer. (4 points: 2 points for each correct answer with work shown) c. (9^4)^? =9^1 d.(5^? )^3=5^1 *question marks represent the boxes

Which of the following is the major negative aspect of crossover designs for research studies? a. prohibitive cost b. residual effects c-subject drepout d. incomplete randomization e. large sample size required