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Rearrange equation 2 to make y the subject, then substitute the y expression into equation 1 and collect like terms: 3x+y=9 -->> y=9-3x x+3y=11 -->> x+3(9-3x)...

Food is price inelastic because there is no alternative or substitute good that we can consume in order to sustain life. Therefore if the price of food increases we still require it to survive, resulting ...

Firstly you should expand the brackets in this situation in order to collect the like terms, so get all the x's on one side and all the constants on the other side of the inequality. Expanding the bracket...

Firstly you check to see if there is a coefficient to the x² term, in this example there isn't so we know that both the brackets will have a single x in, (x +  )(x +  ). We also know both the s...

An indirect command is a subordinate clause (not the main clause) that uses a command verb, then 'ut' and then a verb in the subjunctive tense (present or imperfe...