Write the equation of the line that passes through the points (8, – 7) and (-9,7). Put your answer in fully reduced point-slope form, unless it is a vertical or horizontal
line.

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)?

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4

The product of 3 and a number increased by 8 is 31 written as an equation