It costs twelve dollars to get in to the fair. Tickets for rides cost extra and are d dollars each If Tyra buys 20 tickets, how much would it cost her for the fair?
20 d - $12
$12 d + 20
$12-20 d
$12 + 20 d

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

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap