Ascience class has 5 girls and 7 boys in the seventh grade and 5 girls and 5 boys in the eighth grade. the teacher randomly selects a seventh grader and an eighth grader from the class for a compettion. what is the probability that the students she selects are both boys?

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

Problem situation: caren is making rice and beans. she can spend no more than $10 on ingredients. she buys one bag of rice for $4.99. beans cost $0.74 per pound. how many pounds of beans, x, can she buy? inequality that represents this situation: 10≥4.99+0.74x drag each number to show if it is a solution to both the inequality and the problem situation, to the inequality only, or if it is not a solution.

Anyone know these questions? i need ,.