Hi i don't know how to do this can u

Use the multiplier method to incrases £258 by 43%

Which of the following is true for the relation f(x)=2x^2+1

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?