Answer:
D
Step-by-step explanation:
a² - b² ← is a difference of squares and is factored in general as
(a + b)(a - b)
42² - 38² ← is a difference of squares and factors as
42² - 38² = (42 + 38)(42 - 38) = 80(4) = 320 → D
Theres roughly 53 weeks in a year (rounded up) that times two would be 106 weeks, take that times 15 and you would have 1,590 dollars (again this was rounded up if your looking for exact it would be wrong)
it would of course be much closer to 1,564 if it wasn't rounded
Answer:
B
Step-by-step explanation:
If stuck on a graphing question you can use Desmos Graphing Calculator, it's a free online resource.