One meaning of the word evaluate is to find the value of an expression. to evaluate, replace a variable with a number and calculate the result. for example, when you are asked to evaluate the expression 4x ? 2 when x = ? 7, you would put ? 7 in place of the variable and calculate: 4 · (? 7) ? 2 = ? 30. evaluate the expressions below for the given values of x and y. homework ? 6/x + 9 if x = 3 8x ? 3 + y if x = 2 and y = 1 2xy if x = 5 and y = ? 3 2x2 ? y if x = 3 and y = 8

Which of the following tables represents exponential functions?

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?

Data for the height of a model rocket launch in the air over time are shown in the table. darryl predicted that the height of the rocket at 8 seconds would be about 93 meters. did darryl make a good prediction? yes, the data are best modeled by a quadratic function. the value of the function at 8 seconds is about 93 meters. yes, the data are best modeled by a linear function. the first differences are constant, so about 93 meters at 8 seconds is reasonable. no, the data are exponential. a better prediction is 150 meters. no, the data are best modeled by a cubic function. a better prediction is 100 meters.