=7x^4+15x^3+4y^2 I hope this helps!!
To find his age 4 years ago, you need to subtract 4 from his current age.
His current age is Y, so his age 4 years ago is: y - 4
Answer: -2log(2) or -0.60206
Explanation:
log(1/4)
= log(2^2)
= - 2log(2)
Diagonals of the parallelogram are congruent.
