Carlee predicted she was going to complete her barrel race heat in 15.7 seconds. After completing her heat, she actually crossed the finish line in 13.5 seconds. What was Carlee's percent of error? Round your answer to the nearest whole percent.

Which best explains why this triangle is or is not a right triangle?

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Given the sequence 7, 14, 28, 56, which expression shown would give the tenth term? a. 7^10 b. 7·2^10 c. 7·2^9