Question

15. If (0.8)x + 1.25 = 2x + 0.05, then x =
2) 2
4) 0
3) 3

Answer 1

Given

• (0.8)x + 1.25 = 2x + 0.05

To find

• x

Solution

• (0.8)x + 1.25 = 2x + 0.05
• 0.8x + 1.25 = 2x + 0.05
• 0.8x - 2x = 0.05 - 1.25
• -1.2x = -1.2
• x = 1.2/1.2
• x = 1

⇾ The value of x is 1

Answer 2

(0.8)x + 1.25 = 2x + 0.05

0.8x + 1.25 = 2x + 0.05

0.8x - 2x = 0.05 - 1.25

-1.2x = -1.2

x = 1.2/1.2

x = 1