The distance a spring stretches is directly proportional to the mass hooked onto the bottom of it. If a spring stretches 1.1 cm when holding a 3-kg weight, how far will it stretch when a 7-kg weight is hooked to the end? A.3.1 cm
B.4.4 cm
C.2.6 cm
D.0.47 cm

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.