Which of the following quadratics will have a maximum value of x=3

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

Use pascal's triangle to find the missing values. x4 - 4xb + 6x2 - ax + 1

Josie buys a pair of boots that retail for $52.00 dollars, however they are currently on sale for 25% off how much does josie pay for the boots if there is also a 6% sales tax on them