Question 3 (1 point) Solve the problem. The sum of twice a number and 14 less than the number is the same as the difference between -30 and the number. What is the number? -3 -5 -8 -4 Question 4 (1 point) Cristiano bought a pair of boots for $500 and, after a fortnight, sold them to Rivelino suffering percentage decrease of 80%. How much did Rivelino pay for the boots? Question 5 (1 point) Everton Associates's working captital at the end of the second semestre was 75% higher than the working capital at the end of the first semestre. Knowing that the former was $78,400, compute the working capital at the end of the first semester. Question 6 (1 point) A couple earned $ 8,800 and their shares are in the ratio 5:3. Find the smallest share to the nearest dollar. Question 7 (1 point) Express in simplest form the ratio of 18 seconds to 15 seconds Question 8 (1 point) An automobile assembly line produced 243 engines of which 27 were defective. If the same rate is true every day, how many of the 4130 engines produced this month are defective? Round to nearest one. A/