If five notebooks cost $5.25 , how much would three notebooks cost?

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

1. what is the measure of ∠abc? what is the measure of ∠abd?

Aportion of a hiking trail slopes downward at about an 84° angle. to the nearest tenth of a flot, what is the value of x, the distance the hiker traveled along the path, if he has traveled a horizontal distance of 120 feet? a. 143.3 b. 12.5 c. 120.7 d. 130.2