The price is $17.00 and there is a 7% sales tax. which proportion will calculate the sales tax a) 7/100=n/17 b) 7/100=17/ c) n/100=7/17 or d)17/100=n/7 pls

Two lines parallel to a third line are parallel to each other. always sometimes or never

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles