Question

8a -1 + 0.5 when a = 1 and b = 10

Answer 1

8a -1 + 0.5 when a = 1 and b = 10

8×a -1 + 0.5 ⇒8×1 -1 + 0.5

8 -1 + 0.5

7+0.5

7.5 ANS

but where is b ? ihope there was something more to the question which u missed