How to find joint frequency

I have 50 to spend at beach. A kayak cost 5 per hour to rent. I buy lunch for 8.50. I want to save 15 for food later. How many hours can i rent the kayak

A cake recipe call for 2 1/2 cups of sugar. how many cups of sugar are needed to bake 5 cakes

5% of people receiving your email opened it. 1% of people receiving your email click a link. Of those who opened the email, what percent clicked the link? 0% 1% 5% 20%

Jim's dog weighs 18 pounds 10 ounces. His cat weighs 6 pounds 3 ounces. How many more ounces does Jim's dog weigh

The distance by air from Kuching to Kota Kinabalu on a map is 5.4 cm. It is given that the scale of the map is 1 cm : 150 km.

What decimal is equivalent to 4 3/12 this is a mixed number 4.25 4.3 4.03 4.12

The grass in Jamie's yard grew 16 centimeters in 10 days. It was growing at a constant rate. How many days did it take the grass to grow 1 centimeter? How many centimeters did the grass grow in 1 day?

It costs $15 dollars to send 3 packages through a certain shipping company. Consider the number of packages per dollar.

Smantha is driving from Richmond to Blacksburg. She has traveled 120 miles in 2 hours. At this rate, how long will it take Smamtha to make the 210-mile trip? A.) 1.5 hours B.) 2.75 hours C.) 3 hours D.) 3.5 hours

He number line below represents which combined inequality? number line with a closed circle on negative 2, shading to the left and a closed circle on 4, shading to the right x greater than or equal to - 2 or x less than or equal to 4 x greater than