A 2-mi cab ride costs $1.70. A 7-mi cab ride costs $3.70. Find a linear equation that models cost c as a function of distance d.

a.
c = 0.53d + 0.90
c.
c = 0.85d + 2.00
b.
c = 0.40d + 0.90
d.
d = 0.40c + 2.00

Alex is on a diet to lose some weight. he is losing weight at a rate of 2 pounds per week. after 6 weeks, he weighs 205 pounds. write and solve a linear equation to find how many weeks it will take alex to reach his target weight of 175 pounds.