Xel uses a tip calculator to figure his tips, but he thinks it is not working accurately. The tip calculator says that a $7 tip is necessary for a $75 meal at a 15% tip rate. Is the calculator

working correctly? How do you know?

Explain how you round the numbers 33 and 89 to estimate their sum

Suppose f (π/3) = 3 and f ' (π/3) = - 7, and let g (x) = f (x) sin x and h (x) = (cos x) / f (x). Find the h' (x)

Ellie got $100 for her birthday. She plans to spend it ALL on the store tomorrow. When she goes there Ellie spends 50 cents every second. How long does it take her to use all her money?

Since it is a repeting decimal, 18.69 is irrational

The half-life of Plutonium-23 is 30 min. How much of a 1500 mg sample will be left 5 hours from now?

Lawrence's father gave him 200 baseball cards. Each week, Lawrence purchase 25 baseball cards to add to his collection.

120,00 is renamed to? ten thousand

43 is 120% of what number? 0.36 3.58 358.33 35.83

Mr Gan has fewer than 20 candies. He wants to pack them into plastic bags. If he packs 3 candies in each bag, he will have 4 extra candies left over. If he packs 5 candies in each bag, he will be short of 2 candies. How many candies does he have?

sarah is currently making 39,000 a year at her job and had been offered a raise to 43,290 per year what would be the percent increase in her salary