Question 253238
Animal starts at 77 and gains 2 pounds per week. Let W = number of weeks and A = animal weight. We get an equation of:
A = 2W + 77
we want Animal weight > 129, so, we get
{{{129 < 2W + 77}}}
step 1 - subtract 77 to get
{{{52 < 2W}}}
divide by 2 to get
{{{26 < W}}}
after 27 weeks, the animal will weigh more than 126 pounds.