Tomatoes are on sale for $2 a pound. Lettuce costs $1.50 per head. Josie buys several pounds of tomatoes and one head of lettuce and spends $9.50. How many pounds of tomatoes, x, did Josie buy? idk know how to this, pls help :(

The radius of a sphere is 3 inches. which represents the volume of the sphere?

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?

Ameteorologist is studying the monthly rainfall in a section of the brazilian rainforest. she recorded the monthly rainfall, in inches, for last year. they were: 10.4, 10.3, 11.7, 11.1, 8.0, 4.4, 2.6, 1.8, 2.5, 4.4, 7.3, 9.5 fill in the missing values in the formula. what is the variance?