Why did this app make me fail my test?

What is 3 ln - 9 expressed as a single natural logarithm? A. Ln 3 B. Ln 6 C. Ln 18 D. Ln 27

The outside dimensions of a rectangular cooler without its top are26 inches by 14 inches by 16 inches. The cooler is 2 inches thick. What is the volume inside the cooler?

Which is easier to use - the outer semi-circle or the inner semi-circle?

Jenny is four times as old as her niece Tina in 12 years jenny will be only twice as old as Tina

The exterior surface of a cylinder with a circumference of 2 feet and a length of 5 feet (and no end caps) is the same as the area of

The cost of petrol rises by 2 cents a liter. last week a man bought 20 liters at the old price. This week he bought 10 liters at the new price. Altogether, the petrol costs $9.20. What was the old price for 1 liter?

1. Which equation represents the linear graph? A) y = 2x - 4 B) y = 2x + 4 C) y = 4x - 2 D) y = 4x + 2

Mary has $500 in her account. She makes a $350 withdrawal, deposits $100, and then gets charged a $20 fee. How much does she have in her account? A) $180 B) $230 C) $290 D) $340

A function g (x) has x-intercepts at (1/2,0) and (6,0). Which could be g (x) ? g (x) = 2 (x + 1) (x + 6) g (x) = (x-6) (2x - 1) g (x) = 2 (x - 2) (x-6) g (x) = (x + 6) (x + 2)

Roger is training for a half-marathon. The course is 13.1 miles long. Let p represent Roger's average pace in minutes per mile. Write and solve an inequality to show the average pace needed to finish the half marathon in less than 2 hours.