HELP!! Set up the rational work application problem. Shelby and Mary started a beading
business to make mask lanyards. If they work together they can make 5 lanyards in 40
mins. Mary can make 5 lanyards in 70 mins if she works alone. How would you set up
the equation to solve for how long will it take for Shelby to make 5 lanyards by herself?

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.

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18