How many solutions does 49m+9=49m+83 have

None. You cancel out 49m on both sides and get 9 = 83, that is not true so there aren't any solutions.

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)

c = 0.429t

step-by-step explanation:

the constant rate at which carlos harvests cassava is 35 minutes per 15 cassavas 15/35 = 0.429 cassava per minute

therefore, an equation that models the number of cassava (c) that harvest carlos in a time (t) is the following:

where t is the time in minutes.

this means that when 35 minutes have elapsed 15 cassava have been harvested, at 70 minutes 30 cassava have been harvested and so on.