Simplify the expression. astronomers measure large distances in light-years. one light-year is the distance that light can travel in one year, or approximately 5,880,000,000,000 miles. suppose a star is 13.4 light-years from earth. in scientific notation, how many miles away is it?

22. catie is starting a babysitting business. she spent $26 to make signs to advertise. she charges an initial fee of $5 and then $3 for each hour of service. write and solve an inequality to find the number of hours she will have to babysit to make a profit. interpret the solution.!