Pls help 100 points pls show step by step explanation and if possible handwritten work
thank you
and you need to factorise ​

How many grams the dog will eat in 3 days?

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)