1 During a trivia bowl, contestants earned 1 point for each correct answer given and
1 points for each incorrect answer
given. By the end of the contest, Mr. Salk
had given 21 correct answers and 19
incorrect answers. Expressed as a decimal
number, what was Mr. Salk's total score?

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

3x = 729 solve for x plz . it's urgent. will mark

Someone answer this asap for gabriella uses the current exchange rate to write the function, h(x), where x is the number of u.s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a. gabriella averages 7.5 u.s. dollars for every 100 euros. b. gabriella averages 100 u.s. dollars for every 25 euros. c. gabriella can exchange 75 u.s. dollars for 100 euros. d. gabriella can exchange 100 u.s. dollars for 75 euros.