Question

What is the value of 5a + 7b

if a = 4 and b = 3??
a : 41
b : 12
c : 43
d : 35

Answer 1

41

Explanation:

the answer is a:41

this is because 5 times 4 is 20 and 7 times 3 is 21

so 20+21 is 41

Answer 2

41

Explanation:

multiplication and addition

5x4=20

7x3=21

20+21=41