Amanda sells homemade birthday cakes for a profit of $39 per cake. she is considering switching to a new type of icing that will increase her profit, as expressed by the function y = 45x, where x is the number sold and y is the amount of profit. how many more dollars will amanda earn on each cake if she switches to the new material? explain how you found your answer. i really need . : )

Amanda will earn $6 more using the new material

Explanation:

We are given that, using the old material, Amanda's profit from selling one cake was $39

Now, using the new materials:

We are given the equation:

y = 45x where y is the profit earned and x is the number of cakes

For selling one cake (x=1), Amanda's profit will be:

y = 45(1) = $45

To get the increase in profit, we will simply subtract the old profit from the new one

This means that:

Increase in profit = 45 - 39 = $6

Hope this helps :)