Suppose a heat exchanger costs $1200 and reduces the heating bill by $200 per year what is the payback time?

2. A local charity sponsors a 5K race to raise money. It receives $55 per race entry and $10,000 in donations, but it must spend $15 per race entry to cover the cost of the race.

How do you get the awnser os 3.55 divided by 5 equals 0.71

When Nelly went to lunch, she paid $16.20 for her sandwich, plus tax. If tax was 6%, how much, in total, did she pay for lunch. (round your answer to the nearest cent)

Solve the equation and state a reason for each step. 8x - 4 = 5x + 8

Which of these professionals most directly uses geometry A. Criminal Lawyer B. Language interpreter C. Opera Singer D. Medical imaging Specialist

What is 3/5 in two equivalent forms

A group of 120 students were asked how old they were when they lost their first tooth. 50% said they were 7 years old. How many students said they were 7 years old when they lost their first tooth? Explain.

In the Income section shown below from the 1040EZ form, a married couple filing their federal income tax return jointly entered $0 on line 6 for their taxable income.

Every used to make $22 an hour, but got a 10% raise. How much more will he make in a 40 hour work week with the raise?

Find the output, y, when imput, x, is - 1