answer: a.
step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.
= 5
step-by-step explanation:
to find the 15th term substitute n = 15 into the nth term formula
= (- 3 × 15 ) + 50 = - 45 + 50 = 5
they used 313 gallons of paint
c. 6tan80