salt water is flowing into an aquarium that contains pure water. The concentration of salt in the aquarium, (c), in grams per 1 liter (g/l) at time (t) in minutes is given by the formula C = 6t/40+t. When does the concentration in the aquarium reach 3.5g/l

step-by-step explanation:

abc

1. perpendicular

2. parallel

3. perpendicular

vwhat effect does the word head have on the meaning of this passage?

a. it demonstrates how intelligent he was.

b. it shows he was a favorite of the teachers.

c. it indicates he would be a good preacher.

d. it reveals how self-important he was.

how does the choice of the word head contribute to the passage’s tone?

a. it offers a sense of entitlement.

step-by-step explanation: