Find the average rate of speed, expressed in miles per hour (unit rate). A post office truck delivered mail on a 9-mile route in 2 hours. please help ! D:

3x + 4y = 5 x- 3y = -7 solve by substitution

Asix-sided number cube is rolled twice. what is the probability that the first roll is an even numbe and the second roll is a number greater than 4?

Which of the following is not a solution to the inequality graphed below? (-2, -4)(-1, -5)(0, -3)(2, -1)which of the following is a solution to the inequality graphed below? select all that apply.(-3, -3)(-1, -1)(-3, -1)(2, 2)