Heidi and her family took a vacation. heidi placed the hotel room charge of $689 on her credit card. she paid the minimum of $20 a month for 49 months. at an interest rate of 18%, she paid $287.90 in interest. how much did heidi spend on the hotel room?

Heidi spend on the hotel room is $976.90

Step-by-step explanation:

Interest rate of her credit card = 18%

Heidi placed the hotel room charge = $689

Total interest was paid by Heidi = $287.90

Total Charge of hotel room paid  = 689 + 287.90 = $976.90

Heidi paid minimum of $20 a month for 49 months = 49 × 20 = $980

t = 3

step-by-step explanation:

put t = 3 in this expression :

(3²-1)(3²-2)(3² - 3)(3² - 4) = 8×7×6×5 = 56×30 = 1680

step-by-step explanation:

this is not possible to solve with the info given.   you need at least an one angle somewhere.