I don't know what to do but I think it is #1
Answer:
An ounce is a unit of weight equal to 1/16th of a pound or about 28.35 grams.
A pound is a unit of weight commonly used in the United States and the British commonwealths. A pound is defined as exactly 0.45359237 kilograms.
Step-by-step explanation:
128 Ounces =
8 Pounds
Sec is 1/cos so sec -120 is 1/cos -120 which is -2
First equation
a. 3x+5=65
b.3x=60 x=20