A pattern of letter arrangements begins with the 3 steps below. First, continue the pattern for 3 more
steps:
1. A
2. ABA
3. ABCBA
4.
5.
How many letters are in each step above?
How many letters do you think there will be in step 10?

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.