Derek is twice as old as Sarah. Two years ago the sum of their age was 20. How old is each now?

Consider the system: y = 3x + 5 y = ax + b what values for a and b make the system inconsistent? what values for a and b make the system consistent and dependent? explain

Acaterpillar eats 1400\%1400% of its birth mass in one day. the caterpillar's birth mass is mm grams. which of the following expressions could represent the amount, in grams, the caterpillar eats in one day? \

Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate