1.) 4-t = 3(t-1)-5

a. 3
b. 6
c. no solution
d. identity

2.) 8x-2(x+1) = 2(3x-1)

a. 0
b. 2
c. no solution
d. identity

3.) 3(c-2) = 2(c-6)

a. 2
b. -6
c. no solution
d. identity

4.) 0.5(m+4) = 3(m-1)

a. -2
b. 2
c. no solution
d. identity

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50.

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.