If 452,000 people each receive an average refund of $2,200, based on an interest rate of 4 percent, what would be the lost annual income from savings on those refunds? (Do not round intermediate calculations.)

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

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

Plzzz answer both questions and i will give you 100 points