Can you give me real life word problem involving ? ​

Write down all the pairs of twin primes beetween 50 and 100

Is the answer of (2x-8)(10x) is 20(x^2-40x)? ​

Anew corporate bond is being offered in the market for 930 pesos. the bond has a face value of 1000 pesos and mature in 10 years. the issuing corporation promises to pay to pesosin interest every year. an investor requiring an 80% return on investment bought this bond. what is the companys cost of the capital raised through this bond issue if the stockbrokers fee is 15 pesos per bond sold?