If 75% is £45 what is the full cost?

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Jude is making cement for a driveway. the instructions show the amount of each ingredient to make 1 batch of cement. complete each statement to adjust the ingredients for each new situation if jude uses these instructions.