If , then what does 3x + 7y equal? A.) 21
B.) 84
C.) -21
D.) 10

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?