Which of the following are solutions to the equation below?
check all that apply.
x^2 + x-20=0

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

For the inequality |c| < |d| to be true, which of the following must be true?

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.