Can someone tell me how to work out this problems and ones similar to it? jack has $16 in a savings account. the interest rate is 5% per year and is not compounded. how much will he have in 1 year?

Nick and nora are married and have three children in college. they have an adjusted gross income of 47,400. if their standard deduction is 12,600 itemized deductions are 14,200 and they get an exemption of 4000 for each adult and each dependent what is their taxable income

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.

Abaseball team drinks 10/4 gallons of water during a game. which mixed number represents the gallons of water consumed? a) 1 1/2 gallons b) 2 1/2 gallons c) 2 3/4 gallons d) 3 1/2 gallons