How do you add positives and negatives?

Tim is 5 years older than Melissa. The sum of their ages is 21. This system is represented by the equations: t = 5 + m t + m = 21 What is the solution if you represent Tim's age on the y-axis and Melissa's age on the x-axis?

Lombardi pizza sells one 20in cheese pizza or two 12in pizzas for 12.99. Determine which size gives more pizza.

X over 2 - x over 3 = 4

0.04 is one-tenth of

Which expression are eqaul 0 when x=-1

Select the correct answer. A dormitory manager buys 38 bed sheets and 61 towels for $791.50. The manager get another 54 bed sheets and 50 towels for $923 from the same store. What is the cost of one bed sheet and one towel? A. $15 and $10 B. $13.

Scott is on his way home in his car. his drive is 18 miles long. he has finished two-thirds of the drive so far. how far has he driven

You want to buy some noodles. A 7-ounce package costs 2.59$. A 12-ounce package costs 4.68$. A 22-ounce package costs 7.92$. Which package is the best by?

Any ratio can be written as a complex ratio. Any ratio can be written as a complex ratio. * O True O False

Simplify the sum 4/m+9 + 5/m2 - 81