To calculate the charge for a load of bricks, including delivery, they use this equation

Question

c = 0.42b + 25 where c is the charge per load and b is the number of bricks. What is the delivery charge per load. They don't give you the number of bricks so ?

Answer 1

So — you cannot solve unless you have the value for b or c or another equation with both b and c.

Sorry that I cannot be of more help. Thanks for asking.