dos hermanos tienen una cuenta de ahorros en el banco por 1920 lo que el corresponde al hermano mayor es 6 veces lo que corresponde al hermano menor más un adicional de 72 soles ¿Cuánto le corresponde al hermano mayor?

Will give brainliest sum of arithmetic series (sigma notation) find the numerical answer to the summation given below. (image shown below)

Measures of the angle of r, 31 s (x+4) t (3x+9)

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online