After five games a football team's goal average is 2.8. After one more game the goal average is 3. The number of goals scored in the 6th game was: A. 3
B. 4
C. 5
D. 6
E. 7
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Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

Prove that quadrilateral is a rhombus.

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.