Ten times the sum of a number and 24 is at most 20

At the beginning of the day, stock xyz opened at $6.12. at the end of the day, it closed at $6.88. what is the rate of change of stock xyz? a. 1.17% b. 11.0% c. 12.4% d. 81.5%

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?