Jayden invested $65,000 in an account paying an interest rate of 2.1% compounded quarterly. Assuming no deposits or withdrawals are made, how much money, to the nearest ten dollars, would be in the account after 7 years?

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

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

Anyone know these questions? i need ,.