13. the amount earned (in dollars) for recycling p pounds
of copper is 2p. how much do you eam for recycling
28 pounds of copper?

Money earned for recycling 28 pounds of copper is $ 56                  

Step-by-step explanation:

Cost of a given substance is the amount of money obtained or received for selling a given substance. The total money received for selling a given number of units or a given amount of substance is equal to the total number of units multiplied by the cost of one unit.

Given: The money earned for recycling p pounds  of copper = 2p

Let the money earned for recycling 28 pounds  of copper be $ x

As, Money earned for recycling p pounds of copper = 2p

So, Money earned for recycling 28 pounds of copper = $ x

⇒ x = 2p × 28 ÷ p = $ 56

Therefore, money earned for recycling 28 pounds of copper is $ 56.

b is 38 degrees.

a is 52 degrees.

this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .

just keep asking questions until you have a better understanding.

step-by-step explanation: