Is a percent increase for 50 to 70 = to the percent decrease from 70 to50

What is the base of 1/9 to the power of 2

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Graph the line with the given slope m and y-intercept b. m=-3,b=1