PLEASE HELP I NEED HELP FAST ILL ALSO THANK AND MARK AS BRAINLIEST IF U ANSWER ALL OF THEM WITH AT LEAST MOST OF THEM CORRECT Find the original price if the price was: $3b after a 70% discount. What number : Increased by 75% is 35? Find the original price if the price was: $8a after a 60% increase?

-1   1/6.   you dont subtract the denominators

step-by-step explanation:

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west

26- 6 = 20. erica has 20 bottles left