State true or false for each statement

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

An octagonal prism has jow many lateral faces?

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.