#25-5: what percent of the regular price does the customer pay if he gets a 9% discount?

91%

Step-by-step explanation:

if x = regular price, convert 9% into a decimal and then multiply. Finally x-(the product of the regular price and 9%) If x=100, substitute and you will get 91 and so you are basically paying 91% of the price

step-by-step explanation:

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours