7. Which of the following illustrates the associative property of addition?

(1) x+10=10+x

(2) 4 (x+8) = 4•x+4•8

(3) x+10+5x = x+5x+10

(4) (7x+5) - 2 = 7x + (5-2)

A baseball is thrown upwards from a height of 5 feet with an initial speed of 64 feet per second, and its height h (in feet) from the ground is given by h (t) = 5 + 64t - 16t2 where t is time in seconds.

Find the mean of the data set: 45, 137, 94, 173, 154, 72, 112, 94, 191

What does it mean if you are in 7th grade and you skip pre algebra and go straight to Algebra 1?

Name two decimals whose sum is less then 1

Noah has $10 to spend at the produce market. Can he buy 7 apples and 2 oranges?

5,8,14,23,55 what is the rule?

Evaluate F (x) - x2+1 for x=3

What is 39 divided by 9

A gardener is mowing a 20 yd-by-40 yd rectangular pasture using a diagonal pattern. He mows from one of the pasture to the corner diagonally opposite. What is the length of this path with the mower? Give your answer in simplified form.

A pond 85 feet across; 1 inch = 4 feet