Shelley spent 17 minutes washing the dishes. she spent 38 minute cleaning her room. explain how can use mental math to find how long shelley spent on the two tasks.

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Given the equation y − 4 = three fourths(x + 8) in point-slope form, identify the equation of the same line in standard form. −three fourthsx + y = 10 3x − 4y = −40 y = three fourthsx + 12 y = three fourthsx + 10

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2