What’s 4.5 rounded to the nearest whole number

Suppose investors can earn a return of 2% per 6 months on a treasury note with 6 months remaining until maturity. the face value of the t-bill is $10,000. what price would you expect a 6-month maturity treasury bill to sell for? (round your answer to 2 decimal places. omit the "$" sign in your response.)

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"