Help me please

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?

The perimeter of a regular pentagon is represented by the expression 35d-25. daryl correctly wrote expression to represent the one side of the pentagon

Consider the equation 0.2(x – 4.5) + 1.7 = 9.6. 1. use the distribution property. 2. combine like terms. 3. use the properties of equality and inverse operations to isolate the variable. 0.2x + (-0.9) + 1.7 = 9.6 0.2x + 0.8 = 9.6