What is the equal number 5 tens and 13 ones

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

Ineed to find the answer to number 2