Ricardo lost 6 golf balls while playing yesterday. he bought a box of 12 golf balls, then lost 4 on the course today. he now has 18 golf balls. how many golf balls did ricardo have to begin with?

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

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)?

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).