Is the relation a function? Why or why not? {(–8, –4), (–2, 0), (1, 3), (–2, 6)}

No; the relation passes the vertical-line test.
Yes; only one range value exists for each domain value.
Yes; two range values exist for domain value –2.
No; two range values exist for domain value –2.

Answer this question only if you know the answer! 30 points and

The standard distance between studs in a house is 1.5 feet. if you have a set of blueprints for a house that mark every 1.5 feet with 2 in., by how many inches will a 13-foot wall be represented?

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?