Kent thinks that x+x and x2 are equivalent expressions because they each have a value of 4 when x=2. Which statement best demonstrates whether Kent is correct?

The Jacobsen family bought concessions at the state fair. • Each hot dog costs $1.25. • Each hamburger costs $2.50. • The family bought a total of 13 hot dogs and hamburgers. • The family spent $22.50 on the hot dogs and hamburgers.

Find zeros of x^4-5x^2+4

If an angle measures 50 degrees, what is it's complement?

Multiply 3.8 x 108 by 7.2 x 10-3, leave your answer in scientific notation.

Two buses leave towns 268 miles apart at the same time and travel toward each other. One bus travels 10 miles per hour slower than the other. If they meet in 2 hours, what is the rate of each bus?

What is the volume of a square based pyramid with a side 11 cm and a perpendicular height of 20 cm

Gwen had 7 1/7 cups of flour. If she used 3 5/7 cups baking, how much flour did she have left

Which expressions are equivalent to 10 a - 25 + 5 b

The high school, middle school, and elementary school are all on the same road. The distance from the high school to the middle school can be represented by the expression 8.7x2+11.9x+3.5.

What is LCM of two numbers if one number is a multiple of the other? give an example