I will mark you the BRAINLIEST if you’re right. HELP ASAP

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

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?

Find the amplitude of a sinusoidal function that models this temperature variation