Answer:
$840
Step-by-step explanation:
4 weeks = 28 days
28 x 30 = 840
Answer: b) 8√2
<u>Step-by-step explanation:</u>

The answer is -60. this is because the signs implemented in front of numbers give it a sort pattern .
when there are two additions the last number after the positive sign will give a positive number 1 greater than the initial number for example + 5 + 6. Answer afterward will be + 7 and for negative sign eg: - 7 - 8 in the question will give the answer -8 the same number after a negative (-) sign .
Hope this helps
Which ordered pair is a solution of the equation y=-9+4 (10,-86)