Solve by completing the square. r2 − 18r = 25

Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?