How to solve for “u” when problem is : -24=5u-4

Given abcd ac=38 and ae=3x+4 find the value of x

If square root x = -7, then x= -49 true or false

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?