Esteban bought a desk lamp at a sale price of $20.25. The original price of the lamp was $45. What was the discount rate of the lamp?

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

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?