Evaluate the expression.

1. (18 + 9) + 11

2. 8(-2)(5)

3. 1.2 + 4.7 + 1.5

Simplify the expression.

4. t + 24 + 17

5.-8 + c + (-10)

6.4(6x)

1. 18+9 = 27...+11 = ?

2. 8(-2) = -16...(5) = ?

3. 7.4

4. t + 41

5. c - 18

6. 24x