Aformula developed to project a pattern of periodic income. income models can be applied to level income with no change in value, level income with changing value, income and value that change by fixed amounts per period (straight-line), income and value that change at a constant ratio (exponential-curve), and variable or irregular income with changing value (true/false)

Identify which of the twelve basic functions listed below fit the description given.

As sales exceed the break‑even point, a high contribution‑margin percentage (a) increases profits faster than does a low contribution-margin percentage (b) increases profits at the same rate as a low contribution-margin percentage (c) decreases profits at the same rate as a low contribution-margin percentage (d) increases profits slower than does a low contribution-margin percentage

What impact might an economic downturn have on a borrower’s fixed-rate mortgage? a. it might cause a borrower’s payments to go up. b. it might cause a borrower’s payments to go down. c. it has no impact because a fixed-rate mortgage cannot change. d. it has no impact because the economy does not affect interest rates.