Ari and his 3 brothers want to take a school trip to Washington D. C. They have $320 saved. each of them will save $18 a week until they have at least $647 to pay for the trip. how much money will they save after 4 weeks?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

I’m really confused and need your assist me with this question i’ve never been taught

Fixed rate mortgage offer: purchase price: $170,000 down payment ($34k): 20% term: 30 years interest rate: 4.25% property tax (yearly): $1,500 homeowner’s insurance (yearly): $1,000 use this example from a fixed-rate mortgage calculator to you answer the questions. keep the page open after you complete this question. according to the calculator, the monthly payment demarco and tanya should anticipate paying for principal and interest is $208. $877. $669. $1,200.