For this, all you have to do is create equations where all you have to do is change the x value. The equation for gym A would be 35 + 42x, where x is the number of months he has the membership, and the first number is the initial fee. The equation for gym B would be 65 + 36x, following the same rules. Now all you have to do is set both of these equations equal to each other:
65+36x=35+42x
Solving this equation results in x=5, which means that he has to have the memberships for 5 months for them to be equal. Now just plug that in to one side of the equation to get the amount he has to spend:
65+36(5) = $245
C, with the ten segments and moving over seven of them you will land on C.
Probably a C-, but it depends on how many other grades are in the gradebook and the exact percentage of your grade.
42 boxes of nails at .4 pounds a box would weigh 16.8 pounds.
180 x 0.06 = 10.80; $10.80.
Hope this helps,
♥Nikki♥