1 - Na equação x – 2y = 10, qual o valor de y quando x vale 20? * 1 ponto a) 5 b) -5 c) 20 d)-20 2 - Comprei uma bermuda e 2 camisetas por 60 reais. Se a bermuda custou 28 reais, qual o valor de cada camiseta? * 1 ponto a) 28 b) 60 c) 32 d) 16

Ben wants to play a carnival game that costs $2. in his pocket he has 5 red tickets worth 35 cents each, and 15 blue tickets worth 10 cents each. which of the following systems of inequalities correctly represents the constraints on the variables in this problem? let represent the red tickets and b represent the blue tickets.

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236

Complete the conditional statement. if a + 2 < b + 3, then a < b b < a a – b < 1 a < b + 1