Calculate the equation of the plane passing through (-1,2,1) and parallel to the straight line {x+y-2z-1=0 , x+2y-z+1=0

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250

Emily is entering a bicycle race for charity. her mother pledges $0.90 for every 0.75 mile she bikes. if emily bikes 18 miles, how much will her mother donate?

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.