I'm giving away 50 points to whoever correctly answers and fully explains this for me!!! Your friend has $80 when he goes to the fair. He spends $4 to enter the fair and $12 on food. Rides at the fair cost $1.25 per ride.

The function f(x) = -1.25x + 64 can be used to determine how much money he has left over after x rides? What does f(17) represent?

A. Your friend paid for 17 rides and spent $42.75.

B. Your friend paid for 17 rides and had $37.25 left over.

C. Your friend paid for 17 rides and had $42.75 left over.

D. Your friend paid for 17 rides and spent $37.25.

Show algebraically that f and g are inverse functions f(x)=x^2/-6; g(x)=square root of 2x+12

Given the choice between receiving $1.000.000 in one month or a single penny-doubled everyday for the period of one month; which option would you choice? show your work to support your answer. (assume that 1 month=30 days)

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores