13. Sebuah persegi panjang mempunyai panjang 5 cm lebih
panjang dari lebarnya. Jumlah
panjang dan lebarnya adalah 19
cm. Jika lebar dinyatakan
dengan m, persamaan linear
yang tepat dari cerita tersebut
adalah​

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.