The speed of a certain chemical reaction is expressed by the equation
Y= 120 - 4x + x², where y is the number
of seconds needed to complete the
reaction and x is the temperature, in
degrees Celsius, at which the reaction
occurs. The reaction is complete in 141
seconds. At what negative temperature,
in degrees Celsius, could the reaction
have occurred?

Will make ! for correct answer the dot plot below shows the number of toys 21 shops sold in an hour.is the median or the mean a better center for this data and why? a. median; because the data is not symmetric and there are outliersb. median; because the data is symmetric and there are no outliersc. mean; because the data is symmetric and there are no outliersd. mean; because the data is skewed and there are outliers

Which fraction represents the ratio 35 : 42 in simplest form

Determine if this is a solution to the system