rewrite the following compound statement as a biconditional.
if it rains, then i use an umbrella, and if i use an umbrella, then it is raining.
a. if i use an umbrella, then it is raining.
b. if my umbrella is broken, then it is not raining.
c. i use an umbrella, if it rains.
d. i use an umbrella if and only if it rains.

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

10 points? ? +++ me asap 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.

What are the measures of angles a, b, and c? show your work and explain your answers. 25 points