dos empresas de computadoras tienen el mismo precio en la lista de artículo una empresa ofrece El 25% y el 15% de descuento la otra empresa ofrece el descuento del 20% 10% y 10% de descuento son más ventajoso para el comprador

The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.

Write the factored form of this trinomial 9x^2+18x-7

How do i i solve this equation? -18 = x/3 + 3