Identify the property that is justifies the statement: If a=b, then a+c=b+c

David invested $1000.00. What would that money grow to in 18 months at a 5.5% interest rate?

The ratio of the side lengths of a quadrilateral is 3:3:5:8, and the perimeter is 380cm. What is the measure of the longest side? 20 cm 160 cm 60 cm

According to a survery 52% of the residents of a city oppose a downtown casino. Of these 52% about 5 out of 10 strongly oppose the casino. A. The probability that a randomly selected resident opposes the casino and strongly opposes the casino is? b.

Sarah runs 2/3 mile and Ben runs 1/2 mile each day for 7 days. How many total miles do they run?

Mitchell needs to take 2 medications. One medication he takes every 4 days, the other he takes every 3 days. On which day will he take both medications.

How many numbers are between k and n?

Timothy tried to solve an equation step by step. 9 (2x+1/3) = 39

Find the inverse of y = 2x^2-8

What is the equation for as amembership fee, a health club charges a one-time amount of $40 and charges $25 for each month. The total fee after m months is $240. What is the value of?

By what number would you multiply - 3/8 (fraction) to get a product of 1?