Question

1. What is the value of 5a + 2b when a = 2 and b = 6 ?

2. What is the value of b^2 - 5 when b = 5

3. What is the value of (a^2 + x)/y when a = 4, x = 6 and y = 2

can someone explain also. Thank you.

Answer 1

1. 22

2. 20

3. 11

Explanation:

1. 5(2) + 2(6)

10 + 12 = 22

2. (5)^2 -5

25 - 5 = 20

3. (4)^2 + 6 / 2

16 + 6 / 2

22 / 2 = 11