KIZMYY545GO KIZMYY545GO Mathematics Answered I need to answer these questions ASAP! Will give brainiest and helpful! 8) Write the unit rate of $7.35 for 5 ¼ ounces. 9) Fresh grapes cost $ 15.70 for 5 pounds. What does 1-pound cost? 10) If the total cost (t) is $535 for 20 calculators (c). What would the equation look like and what is the constant of proportionality (K)?