DIRECTIONS: Evaluate the following algebraic expressions using the given values. Write only the final answer. 1. Evaluate: 7 + 4b when b = 5 *

2. Evaluate: 27 – z when z = 4 *

3. Evaluate: 4x – 8y when x = 2 and y = -3 *

4. Evaluate: 5a – 3b + 12 when a = 5 and b = 12 *

5. Evaluate: 7m – n + 18 when m = -3 and n = 9 *

6. Evaluate: -4x²y + 3xy² when x = -3 and y = 2 *

7. Evaluate: 5ab² – 3c² when a = 4 , b = 3 and c = 2 *

8. Evaluate: 5c² – 4ac² when a = -2 and c = 2 *

9. Evaluate: 3(p + 6) when p = 4 *

10. Evaluate: 7 + 11k when k = -3 *
please answer URGENT

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

Simplify the expression 10/11(22z) + (a+5) -1

The krasnapolski is a top-of-the-line hotel in amsterdam, the netherlands. among their many services, they rent bicycles to guests. the bicycle checkout is open 24 hours per day 7 days per week and has 50 bicycles on hand. on average, 10 guests request a bicycle each day, arriving completely randomly at all times of the day during the spring and summer seasons. guests keep bicycles for four days on average, with a standard deviation of two days. how long does a guest on average have to wait for a bike? a. approximately 24 hours b. approximately 0.033 hours c. approximately 4 days d. approximately 47 minutes