An experiment is underway to test the effect of extreme temperatures on a newly developed liquid. Two hours into the experiment, the temperature of the liquid is -20°C. After 6 hours
of the experiment, the temperature of the liquid is -40°C. Assume that the temperature has
been changing at a constant cate throughout the experiment and will continue to do so. Write
an equation for the temperature of the liquid. How many hours into the experiment will the
temperature of the liquid be -100°C?

Carter drank 15.75 gallons of water in 4 weeks. he drank the same amount of water each day. a. estimate how many gallons he drank in one day. b. estimate how many gallons he drank in one week. c. about how many days altogether will it take him to drink 20 gallons?

Can someone tell me if these are correct?

Lian is deciding which of two gyms to join. each gym charges a monthly rate plus a one-time membership fee. lian correctly wrote and solved a system of linear equations by substitution to compare the costs of the memberships. in her work, she substituted an expression for one variable and solved for the other. this resulted in the equation 75 = 75. what can lian conclude? one gym charges $75 per month. each gym charges $75 per month both gyms charge the same monthly rate and the same membership fee. both gyms charge the same monthly rate, but not the same membership fee.