Est: chapter 1 pre-testthis question: 1 pt1 of 20 (0 a number is decreased by 20% of itself, the result is 136. what is the number? the number is

You invested $5000 between two accounts paying 4% and 9% annual interest, respectively. if the total interest earned for theyear was $350, how much was invested at each rate? $was invested at 4% andwas invested at 9%.

Abarbecue sold 26 hamburgers and hot dogs. hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. if the barbecue made $70 in sales, determine and state the number of hot dogs sold.

Can someone tell me if this is perpendicular? !