Aclothing store offers a 30 percent discount on all items in the store. if the original price of a sweater is $40 how much will it cost after the discount

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

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.

Icould really use some with this question.