The sum of three consecutive numbers is 78, what are the numbers? using algebra (the first number is n)

x + (x+2) + (x+4) = 78 right?

but where does the 2 and 4 come from

M and M, Inc. produces a product that has a variable cost of $4.20 per unit. The companys fixed costs are $45,600.

In which step did Rena make the first error?

How do you graph and solve this problem? y=x+2, 3y-2x=4

Kevin buys 4 folding chairs. each chair costs 13.50. the sales tax is 6.5% what is the amount of sales for kevins purchase

Birth weights in norway are normally distributed with a mean of 3570 g and a standard deviation of 500 g.

How many decimeters is there in 5 yards

Between what two multiples of 100 is 788?

Abbey purchased a house using a fixed rate mortgage. The annual interest rate is 4.2% compounded monthly for 20 years. The mortgage amount is $235,000. What is the monthly payment on the mortgage?

6.24159 rounded to the hundredths place?

A rope is cut into tree pieces, P, Q, and R. The lengths of the pieces are in the ratio 3 : 5 : 7. If the rope is 33 feet 9 inches long, find the lengths of P, Q, and R.